MalwareTips
File verdict·Decided by the MT AI Engine
Our call

Suspicious

New PDF undetected by engines but shows suspicious sandbox behaviors like process injection, LSASS access, and direct IP connections.

Trust score50Caution
AlphaGraphics_Proposal_Invitation.pdf
102.4 KB
d905f6f48cbb8bb8d8…1179dab558
Antivirus engines
0 of 75 flagged
Code signing
Unsigned
Age
First seen 2mo ago
MT AI Engine · Verdict analysis

The reasoning behind this verdict

The MT AI Engine weighs every signal from this scan — antivirus detections, sandbox behaviour, code signing, prevalence and historical matches — to reach a single, evidence-based verdict.

80%Confidence
High
Reasoning

Static analysis is entirely clean with zero malicious or suspicious flags from good engine coverage. Dynamic sandbox behavior triggers high-confidence synthesis rules for process injection into Explorer, potential LSASS credential access, and direct-IP C2 patterns typical of exploits. The PDF nature and business-proposal filename align with phishing vectors, but lack of sandbox malicious verdict, unknown dropped child, and unflagged IPs temper the concern. No historical RAG, external intel, or feedback provides additional context. Overall, dynamic risks outweigh static cleanliness for a suspicious call.

Key signals · 5

Each signal cites a concrete token from the evidence the arbiter saw — engine name, MITRE technique, signer string, or an exact count.

  1. 0/63 engines malicious (17 tier1 clean)

  2. triggeredHeuristics 'MalwareTips.Synth.ProcessInjection' (high, T1055)

  3. behaviour.contactedIps length=3 (184.29.30.201 etc.), no contactedDomains

  4. file.ageDays=1, prevalence.classification='rare_new'

  5. behaviour.offensiveCount=3 including T1003/T1055

Points in its favour
  • 0 malicious from 63 engines (17 tier1 clean)
  • No malicious sandbox verdict
  • No malicious dropped children
  • No external intel hits
  • No hacktool/PUA labels
Points against
  • Process injection heuristic (T1055, high severity)
  • Credential dumping pattern (T1003, LSASS access)
  • Direct IP connections without DNS (3 IPs)
  • Rare new prevalence (1 submission, 1 day old)
  • PDF file type (common exploit vector)
  • Offensive MITRE techniques (count=3)
Recommended action

Quarantine this file and avoid opening it. Perform a full system scan with updated security tools and analyze the dropped child file if present.

What this file does

What it attempted when executed in an isolated sandbox

  • High concern: Tries to steal saved passwords and credentials from Windows.

  • High concern: Hides inside another running program to evade antivirus.

  • High concern: Talks to a remote server to take commands or send out your data.

  • High concern: Tries to disable or bypass your security software.

  • Moderate concern: Checks whether it's being watched in a sandbox before acting.

  • Moderate concern: Checks which security software you have installed.

  • Note: Reads your Windows user-account details.

Translated from the file's technical behaviour during analysis. It never ran on your device.

What to do now

We couldn't fully clear this file. Treat it with caution.

  1. Don't run it unless you're certain it came from a source you trust.

  2. Check where you got it — an email attachment or a random download link is a red flag.

  3. If you're unsure, delete it. You can always re-download a clean copy from the official source.

  4. If you're still unsure, scan it again in a day or two — detections often catch up on newer files.

Runtime behaviour

What this file did when executed

This file was detonated in 1 sandbox and its runtime behaviour was observed.

MITRE ATT&CK
16

Adversary techniques mapped to the MITRE ATT&CK framework.

T1003· Credential theftT1012T1033· Reads user infoT1047T1055· Process injectionT1071· Remote server (C2)T1082· System reconT1203T1485T1497· Sandbox evasionT1518· Checks your AVT1562· Disables securityT1564· Hides artifactsT1564.003· Hides artifactsT1566.002T1573
Spawned processes
15
$(unnamed)
C:\Windows\System32\mobsync.exe -Embedding
$(unnamed)
"C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe" "C:\Users\<USER>\Desktop\AlphaGraphics_Proposal_Invitation.pdf"
$(unnamed)
"C:\Program Files\Adobe\Acrobat DC\Acrobat\Adobe Crash Processor.exe"
$(unnamed)
C:\Windows\Explorer.EXE
$(unnamed)
C:\Windows\system32\services.exe
$(unnamed)
"C:\Program Files\Adobe\Acrobat DC\Acrobat\CRWindowsClientService.exe" "C:\Program Files\Adobe\Acrobat DC\Acrobat" updatepvbpreference c0de53ca-f166-4b38-89ab-4780a127e731 0 0
$(unnamed)
"C:\Program Files\Adobe\Acrobat DC\Acrobat\CRLogTransport.exe" "C:\Program Files\Adobe\Acrobat DC\Acrobat" "C:\Users\<USER>\AppData\LocalLow\Adobe\CRLogs\crashlogs"
$(unnamed)
"C:\Program Files\Adobe\Acrobat DC\Acrobat\CRLogTransport.exe" "C:\Program Files\Adobe\Acrobat DC\Acrobat" "C:\Users\<USER>\AppData\LocalLow\Adobe\CRLogs\dumps"
+7 more processes captured.
Network activity
3
IP addresses3
  • 184.29.30.201
  • 23.22.254.206
  • 162.159.36.2
Filesystem & mutexes
25
Files written15
  • C:\Users\<USER>\AppData\Local\Temp\acroNGLLog.txt
  • C:\Users\<USER>\AppData\Local\Temp\NGL\
  • C:\Users\<USER>\AppData\Local\Temp\TmpE92.tmp
  • C:\Users\<USER>\AppData\Local\Temp\A9qjy75q_8vkj4l_4x8.tmp
  • C:\Windows\ServiceProfiles\LocalService\AppData\Local\FontCache\Fonts\Download-1.tmp
+10 more
Files deleted3
  • C:\Users\<USER>\AppData\Roaming\Adobe\Acrobat\DC\JSCache\GlobSettings
  • C:\Users\<USER>\AppData\Local\Packages\Microsoft.XboxGamingOverlay_8wekyb3d8bbwe\LocalCache\KnownGameList.bin
  • C:\Users\<USER>\AppData\Local\Microsoft\GameDVR\KnownGameList.update
Mutexes created7
  • Local\SyncServiceThread
  • Local\SessionImmersiveColorMutex
  • Global\_MSIExecute
  • Global\MSILOG_4ce7be391dce1b5GOL.b1211ISM_pmeT_lacoL_ataDppA_onurB_sresU_:C
  • Global\AdobeCrashProcessorLocalLowLock
+2 more
Dropped payload

Files this sample writes at runtime

This file drops 1 child at runtime. None are currently flagged malicious in our cache.

1 unseen
  • a779a261df447a4c298c…b1b86dNever scanned
    never seen before
No researcher-database hits
External threat-intel sources were not collected for this scan.
Signature matches

YARA & heuristic rule matches

A researcher-curated or high-severity heuristic rule matched this sample. These rules target specific malware families and are near-definitive.

3 synthesis
MITRE ATT&CK profile
Defense evasion× 1Cred access× 1C2× 1
MalwareTips synthesis rules
Our own detection rules, applied to the scan data and sandbox behaviour
  • ProcessInjection
    T1055
    high

    MITRE T1055 (Process Injection) observed — CreateRemoteThread / APC / reflective-DLL injection. The payload is being smuggled into a legitimate process to bypass AV hooks.

    Evidence
    C:\Windows\Explorer.EXE
  • CredentialDumper
    T1003T1003.001
    medium

    Sandbox observed process activity targeting LSASS (Windows credential store). Legitimate software has no business reading LSASS memory — this is Mimikatz-shape behaviour.

    Evidence
    C:\Windows\system32\lsass.exe
  • DirectIpC2
    T1071
    medium

    Sample contacted 3 external IP address(es) and zero domains. Benign software virtually always uses DNS; no-DNS direct-IP C2 is a strong malware indicator because it bypasses reputation systems and dodges domain-based blocklists.

    Evidence
    184.29.30.201 · 23.22.254.206 · 162.159.36.2
Antivirus engine breakdown

0 detections across 75 engines

0 malicious0 suspicious75 clean
Tier-117 engines
0flag
Top commercial AVs (low FP rate)
Tier-241 engines
0flag
Mainstream engines with mixed FP rates
Low-trust17 engines
0flag
Heuristic / generic-AI engines (high FP rate)
All 75 engines report this file as clean.
Hash d905f6f48cbb… cross-referenced against 75 AV engines via our AV network.
Prevalence

How widely this file has been seen

Barely seen in the wild and first surfaced recently. This is the footprint of targeted malware the AV industry hasn't signatured yet — extra scrutiny is warranted.

Rare & new
Unique uploaders
1
Very few people have ever uploaded this — rare.
Total submissions
1
Includes repeat uploads by the same source.
First seen
2mo ago
May 11, 2026
Prevalence quadrant
here
Rare · New
Targeted malware lives here
Common · New
Just-released software
Rare · Old
Niche or internal tooling
Common · Old
Trusted legitimate binaries
File identity

Forensic fingerprint

File biography
First seen (VT)
5/11/2026, 2:15:11 PM
First seen (MalwareBazaar)
—
Last analysis (VT)
5/11/2026, 2:15:11 PM
Scanned here
5/12/2026, 4:57:49 PM
File name
AlphaGraphics_Proposal_Invitation.pdf
Size
102.4 KB
MIME type
(unknown)
Detected type
PDF
SHA-256
d905f6f48cbb8bb8d8da8b2a14b09f31e23acd8c6c9fbde99a95491179dab558
MD5
66257302ddfd482eeb93da32ceacacf9
SHA-1
eefac54390ef710172af234cca3a07b6b531fb4c
First seen (VT)
5/11/2026, 2:15:11 PM
Last analysis (VT)
5/11/2026, 2:15:11 PM
First scan (MalwareTips)
5/12/2026, 4:57:49 PM
Last scan (MalwareTips)
5/12/2026, 4:57:49 PM
Behavior tags
pdf
Frequently asked

Safety FAQ

Common questions about AlphaGraphics_Proposal_Invitation.pdf, answered from the scan data above.

  • AlphaGraphics_Proposal_Invitation.pdf is suspicious — treat it as unsafe until you're sure. 0 of 75 antivirus engines flag it, which isn't a strong consensus but is enough to be cautious. Don't opened it unless you fully trust where it came from, and prefer downloading the software fresh from its official site.
  • AlphaGraphics_Proposal_Invitation.pdf is a document file, about 102 KB. We identify a file by its cryptographic hash rather than its name, because the same filename can be reused by completely different files — the hash below is the reliable fingerprint.
  • None — all 75 antivirus engines we queried report AlphaGraphics_Proposal_Invitation.pdf as clean. That's reassuring, though brand-new malware can briefly evade detection before vendors add signatures, so we also weigh the file's behaviour and reputation.
  • Act quickly. 1) Disconnect the device from the internet to stop the malware communicating or spreading. 2) Run a full scan with reputable anti-malware software (such as Malwarebytes) and quarantine everything it finds. 3) Change your important passwords from a DIFFERENT, clean device — many threats log keystrokes or steal saved credentials. 4) If you bank or shop on this device, watch closely for fraud and alert your bank. 5) For a confirmed infection, the most reliable fix is to back up your personal files and reinstall the operating system for a clean start.
  • To remove AlphaGraphics_Proposal_Invitation.pdf: 1) restart into Safe Mode (Safe Mode with Networking if you need to download a tool) so the malware doesn't auto-start. 2) Run a full scan with reputable anti-malware software and let it quarantine or delete the detections. 3) Delete the original AlphaGraphics_Proposal_Invitation.pdf file and empty the Recycle Bin/Trash. 4) Check your browser extensions, startup items, and scheduled tasks for anything unfamiliar. 5) Reboot and scan again to confirm it's gone. If detections keep coming back, a clean operating-system reinstall is the most dependable cure.
  • The SHA-256 hash of AlphaGraphics_Proposal_Invitation.pdf is d905f6f48cbb8bb8d8da8b2a14b09f31e23acd8c6c9fbde99a95491179dab558, and its MD5 is 66257302ddfd482eeb93da32ceacacf9. This hash is the file's unique fingerprint — two files with the same SHA-256 are identical. Use it to confirm you're looking at exactly this file (not just one with the same name) when comparing against antivirus databases or a download's published checksum.
  • This report reflects the scan run on May 12, 2026. Because a file's hash never changes, the identity of AlphaGraphics_Proposal_Invitation.pdf is fixed — but antivirus coverage improves over time, so a file that looks clean today can pick up detections later (and vice-versa). If you need the latest picture, MalwareTips staff can re-run the analysis from scratch.
Community classification

Reviews & malware reports(0)

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