File scan report
Verdict Safe
Is this PDF document safe? Yes, no threats found.
No antivirus engine detected malware, and the completed sandbox run showed no offensive techniques, though two direct-IP contacts lack a complete reputation check.
Read the whole reasonShow less
Moderate evidence · No engine flags it, but no publisher signature confirms who made it.
Good practice2 tips
We found nothing harmful in this file.
Open it only if you trust the person or website it came from.
Keep your security software and system updates switched on.
No scanner can promise a file is 100% safe.
Reads the latest antivirus results for this file's hash. Nothing is uploaded.
Antivirus results
0 of 61 flagged
- Flagged 0
- No detection 61
- No result 15
- Code signing Not applicable
- Test run Completed
- First seen 12y ago
Chapter 02
Why we think so
3 points against it and 5 in its favour, checked against the scan evidence.
The reasoning behind this verdict
None of the 61 antivirus engines that checked it flagged this long-observed PDF, including all 18 reporting major antivirus engines. One sandbox run produced no offensive techniques or malicious verdict, but two external IP contacts were not fully reputation-checked, so standard PDF precautions remain appropriate.
The strongest evidence is broad detection silence: 0 of the 61 antivirus engines that checked it flagged the sample, with no major detections. A completed sandbox run recorded two techniques common in legitimate software but no offensive techniques, persistence indicators, or malicious sandbox verdict. Ten written or extracted child hashes were inspected without a malicious child finding, although their individual verdicts remain unknown. The direct-IP rule is a meaningful counter-signal, but it is unsupported by engine detections, curated intelligence, or other offensive behavior. No complete contacted-host reputation result was available.
What We Detected
None of the 61 antivirus engines that checked it flagged the PDF, and all 18 reporting major antivirus engines returned no detection. Curated intelligence checks also produced no MalwareBazaar, CIRCL, or YARAify hit.
Threat Behavior
One completed sandbox run recorded no offensive MITRE techniques, no persistence indicators, and no malicious sandbox verdict. Ten child hashes were inspected without a malicious child finding, although their individual status remains unresolved. A rule noted direct connections to 50.16.47.176 and 23.213.164.167; because contacted-host reputation coverage is unavailable, those connections cannot be confirmed as benign or harmful.
What To Do Now
Open the document only with an updated PDF reader and keep security software enabled. If the file came from an unexpected source, use a restricted viewer or confirm its origin before interacting with embedded content.
Where this verdict could be wrong3 caveats
- One of our behaviour rules identified direct traffic to 50.16.47.176 and 23.213.164.167; the missing contacted-host reputation result leaves their reputation unresolved.
- The file's tag list includes file-embedded and autoaction, indicating active PDF features that warrant caution despite the absence of detections.
- prevalence.classification=rare but long known records only 2 submitters and 2 submissions, so prevalence support is limited.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- 0/61 engines reported a malicious or suspicious result.
- No major antivirus engines flagged it and 18 major antivirus engines reported it clean.
- No offensive techniques were mapped and no sandbox returned a malicious verdict.
- No dropped file is known to be malicious across 10 inspected children.
- YARAify, CIRCL, and MalwareBazaar returned no corroborating hit.
- Direct-IP traffic to 50.16.47.176 and 23.213.164.167 was observed without a complete host-reputation result.
- The PDF carries file-embedded and autoaction tags.
- Only 2 submissions from 2 sources are recorded despite the file's age.
6 sources checked · 5 complete · 1 partial. See every source
Chapter 03
What it did in our test
It ran in our isolated test environment; no test environment rated what it did as risky.
Test run summary
Capture complete- 2sandbox rule tags
- 3spawned processes
- 2network contacts
- 39filesystem & mutex artifacts
What this file did when executed
This file was run in a sandbox and its runtime behaviour was observed.
Techniques observed in the sandbox
2MITRE ATT&CK techniques the sandbox mapped. Highlighted ones are rare in normal software; the others are common in legitimate programs too.
- T1036
- T1082· System recon
Observed activity
Processes started
3Programs the file ran, with their command lines.
RdrCEF.exec:\program files (x86)\adobe\acrobat reader dc\reader\acrocef_1\RdrCEF.exe --backgroundcolor=16514043ProgramC:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe" "C:\Users\user\Desktop\PDF documentRdrCEF.exe"C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --backgroundcolor=16514043
Network contacts
22 hosts, listed as 2 addresses. Links show the host and path only.
- IP address
50.16.47.176 - IP address
23.213.164.167
Files
30Files the file created, changed or deleted.
- Written
C:\Users\<USER>\AppData\Local\Adobe\Acrobat\DC\SOPHIA\Reader\SOPHIA.json - Written
C:\Users\<USER>\AppData\Local\Adobe\Acrobat\DC\SOPHIA\Reader\Files\TESTING - Written
C:\Users\<USER>\AppData\Local\Adobe\Acrobat\DC\Cache\AdobeFnt23.lst.276 - Written
C:\Users\<USER>\AppData\Local\Adobe\Acrobat\DC\AdobeFnt23.lst.276 - Written
Local\07C98DD0 - Written
Local\07C98FF8
Show all 30 entries for files
- Written
Local\07E23250 - Written
Local\0818BC78 - Written
C:\Users\<USER>\AppData\Local\Adobe\Acrobat\DC\UserCache.bin - Written
C:\Users\<USER>\AppData\LocalLow\Adobe\Acrobat\DC\ConnectorIcons\icon-231119232609Z-543.bmp - Written
Local\07C973F0 - Written
Local\0823EA28 - Written
Local\0823E5D8 - Written
C:\Users\<USER>\AppData\Local\Temp\A9pq24lu_pdft7j_7o.tmp - Written
C:\Users\<USER>\AppData\Local\Temp\A91fvblqi_pdft7k_7o.tmp - Deleted
C:\Users\<USER>\AppData\Local\Adobe\Acrobat\DC\SOPHIA\Reader\Files\DC_READER_LAUNCH_CARD - Deleted
C:\Users\<USER>\AppData\Local\Adobe\Acrobat\DC\SOPHIA\Reader\Files\ACROBAT_READER_MASTER_SURFACEID - Deleted
C:\Users\<USER>\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages-journal - Deleted
C:\Users\<USER>\AppData\Local\Temp\A910iti9q_pdft7m_7o.tmp - Deleted
C:\Users\<USER>\AppData\Local\Temp\A9p4wccg_pdft7o_7o.tmp - Deleted
C:\Users\<USER>\AppData\Local\Temp\A9tvlb3j_pdft7l_7o.tmp - Deleted
C:\Users\<USER>\AppData\Local\Temp\A9pq24lu_pdft7j_7o.tmp - Deleted
C:\Users\<USER>\AppData\Local\Temp\A91fvblqi_pdft7k_7o.tmp - Deleted
C:\Users\<USER>\AppData\Local\Temp\A913lfqko_pdft7n_7o.tmp - Deleted
C:\Users\user\AppData\LocalLow\Adobe\AcroCef\DC\Acrobat\Cache\Code Cache\js\05349744be1ad4ad_0 - Deleted
C:\Users\user\AppData\LocalLow\Adobe\AcroCef\DC\Acrobat\Cache\Code Cache\js\0786087c3c360803_0 - Deleted
C:\Users\user\AppData\LocalLow\Adobe\AcroCef\DC\Acrobat\Cache\Code Cache\js\0998db3a32ab3f41_0 - Deleted
C:\Users\user\AppData\LocalLow\Adobe\AcroCef\DC\Acrobat\Cache\Code Cache\js\0ace9ee3d914a5c0_0 - Deleted
C:\Users\user\AppData\LocalLow\Adobe\AcroCef\DC\Acrobat\Cache\Code Cache\js\0f25049d69125b1e_0 - Deleted
C:\Users\user\AppData\LocalLow\Adobe\AcroCef\DC\Acrobat\Cache\Code Cache\js\230e5fe3e6f82b2c_0
Registry and auto-start
4Settings the file changed, including ways to start again after a restart.
- Deleted
HKEY_LOCAL_MACHINE\System\Acrobatviewercpp473 - Deleted
HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\AVGeneral\cRecentFiles - Deleted
\Device\HarddiskVolume4\Users\user\AppData\Local\Adobe\Acrobat\DC - Deleted
HKEY_LOCAL_MACHINE\SYSTEM\Acrobatbrokerserverdispatchercpp789
Mutexes
9Named locks a program uses so only one copy runs; malware families often reuse them.
Local\Acrobat Instance MutexDBWinMutexcom.adobe.acrobat.rna.RdrCefBrowserLock.DC\Sessions\1\BaseNamedObjects\{100184D2-BDC3-477a-B8D3-65548B67914C}_6584\Sessions\1\BaseNamedObjects\Local\{100184D2-BDC3-477a-B8D3-65548B67914C}_5708\Sessions\1\BaseNamedObjects\Local\Acrobat Instance Mutex
Show all 9 entries for mutexes
\Sessions\1\BaseNamedObjects\Global\{100184D2-BDC3-477a-B8D3-65548B67914C}_5252\Sessions\1\BaseNamedObjects\com.adobe.acrobat.rna.RdrCefBrowserLock.DC\Sessions\1\BaseNamedObjects\DBWinMutex
Sandbox background — not the file
1The analysis machine's own processes and connections, recorded in every run.
- VM host
8.8.8.8
Files this sample writes at runtime
This file drops 7 children at runtime. None are currently flagged malicious in our cache. 7 have no saved verdict and were not checked; that is missing coverage, not a finding.
- 585991e66f28e9198082…37a73dNot checkedno saved verdict
- d75e67be71df3771e8b6…98c47eNot checkedno saved verdict
- d7af062a42063bdcd4b8…9c7201Not checkedno saved verdict
- dfbc48083ccc0e142b99…a79e8eNot checkedno saved verdict
- 9ba300650db726c94f8d…b14d74Not checkedno saved verdict
- 4e2dd146049a8eb07700…09e60eNot checkedno saved verdict
- 2f44f5e630edd7425440…cfcbd8Not checkedno saved verdict
Chapter 04
Technical details
None of the 61 antivirus engines that checked it flag it.
Sources checked
Every check behind this verdict
6 sources checked · 5 complete · 1 partial. Complete means the check returned a usable result; it does not mean the file is safe.
File fingerprint
- File name
- PDF document
- Format
- Size
- 7.7 MB
- Code signing
- Not applicable to this file type
- Last analyzed
- Sep 10, 2026, 9:17 PM UTC
- SHA-256
b7fd20ab0992f59e01d9e09dc4e8460fecec1081503dd1e346affb03e5636c08- SHA-1
a2c6caab8d4bdfb9a3ffd05c218946eb4816b2ec- MD5
a1b8fff7eb5a769142c713b1dc3d0978
First scanned
Antivirus consensus
0 of 61 engines flagged this file
15 of the 76 engines returned no result for this file (file type not supported, or the scan did not finish), so they did not check it.
- Tier-118 engines0flagged
- Tier-233 engines0flagged
- Low-trust10 engines0flagged
View all 76 engine results
- AcronisClean
- AhnLab-V3Clean
- AlibabaNo result
- ALYacClean
- Antiy-AVLClean
- APEXNo result
- ArcabitClean
- AvastClean
- Avast-MobileNo result
- AVGClean
- AviraClean
- BaiduClean
- BitDefenderClean
- BitDefenderFalxNo result
- BitDefenderThetaClean
- BkavClean
- CAT-QuickHealClean
- ClamAVClean
- CMCClean
- CrowdStrikeNo result
- CybereasonNo result
- CylanceNo result
- CynetClean
- DeepInstinctNo result
- DrWebClean
- ElasticNo result
- EmsisoftClean
- ESET-NOD32Clean
- F-SecureClean
- FireEyeClean
- FortinetClean
- GDataClean
- GoogleClean
- GridinsoftClean
- IkarusClean
- JiangminClean
- K7AntiVirusClean
- K7GWClean
- KasperskyClean
- KingsoftClean
- LionicClean
- MalwarebytesClean
- MAXClean
- MaxSecureClean
- McAfeeClean
- MicrosoftClean
- MicroWorld-eScanClean
- NANO-AntivirusClean
- PaloaltoNo result
- PandaClean
- RisingClean
- SangforClean
- SentinelOneClean
- SkyhighClean
- SophosClean
- SUPERAntiSpywareClean
- SymantecClean
- SymantecMobileInsightNo result
- TACHYONClean
- tehtrisNo result
- TencentClean
- TrapmineNo result
- TrendMicroClean
- TrendMicro-HouseCallClean
- TrustlookNo result
- VaristClean
- VBA32Clean
- VIPREClean
- VirITClean
- ViRobotClean
- WebrootNo result
- XcitiumClean
- YandexClean
- ZillyaClean
- ZoneAlarmClean
- ZonerClean
How widely this file has been seen
Rarely uploaded, and first seen more than two weeks ago. Often niche legitimate software or internal tooling; not a strong malware signal on its own.
Chapter 05
Questions & answers
Short answers to the 6 questions people ask most about this file.
Is this PDF document safe?
What is this PDF document?
How many antivirus engines detected this PDF document?
What is the SHA-256 hash of this PDF document?
Is it safe to open this PDF document?
How up to date is this analysis of this PDF document?
Community
Member reviews and reports for this exact file hash.