File scan report
Verdict Safe
Is this PDF document safe? Yes, no threats found.
This PDF document has no antivirus detections across 75 engines, and the sandbox runs only showed the PDF reader opening it normally, with no high-risk behaviour.
Read the whole reasonShow less
Moderate evidence · No engine flags it, but no publisher signature confirms who made it.
This PDF document can be opened normally; keep your PDF reader up to date and your security software enabled.
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.
Antivirus results
0 of 62 flagged
- Flagged 0
- No detection 62
- No result 13
- Code signing Not applicable
- Test run Completed
- First seen 4y ago
Chapter 02
Why we think so
0 points against it and 4 in its favour, checked against the scan evidence.
The reasoning behind this verdict
None of the 62 antivirus engines that checked it flagged this PDF document, including all 18 major antivirus engines. Two sandbox runs recorded only routine reader activity, and no public malware database lists it. It has circulated for several years without detections.
None of the 62 antivirus engines that checked it flagged this PDF document, and every major antivirus engine that analysed it reported it clean. Two sandbox runs showed only the PDF reader and its updater starting, writing font and cache files, with no high-risk techniques and no injection. Public malware databases and community rule sets returned no matches. The file has been seen by 38 submitters over roughly four and a half years without any detections. It contains form fields and an automatic action, which are common in ordinary PDFs and here show no hostile use.
What We Detected
None of the 62 antivirus engines that checked it flagged this PDF document; all 18 major antivirus engines reported it clean. No public malware database or community rule set matched it.
Threat Behavior
In two sandbox runs the document only caused the PDF reader and its updater to start and write routine font and cache files. No high-risk techniques, process injection or network contacts by the sample were recorded. The file includes form fields and an automatic action, features found in many legitimate PDFs. No complete host-reputation result is available, but no contacts were observed.
What To Do Now
The document can be opened normally. Keep your PDF reader updated and your antivirus enabled as standard practice.
Where this verdict could be wrong1 caveat
- The document contains form fields and an automatic action, features that can be abused in malicious PDFs, though here nothing in the engine results or sandbox runs suggests hostile use.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- No detections from any of the 75 engines, including all major antivirus engines
- Sandbox runs showed only normal PDF reader activity
- No matches in public malware databases or community rule sets
- Seen by dozens of submitters over several years without detections
6 sources checked · 5 complete · 1 not needed or not applicable. See every source
Chapter 03
What it did in our test
It ran in 2 isolated tests; no test environment rated what it did as risky.
Test run summary
Capture complete- 2isolated sandbox runs
- 1spawned processes
- 0network contacts
- 13filesystem & mutex artifacts
What this file did when executed
This file was detonated in 2 sandboxes and its runtime behaviour was observed.
Observed activity
Processes started
1Programs the file ran, with their command lines.
Adobe_Updater.exeC:\Program Files (x86)\Common Files\Adobe\Updater6\Adobe_Updater.exe -doActionAppID=reader9rdr-es_ES
Files
5Files the file created, changed or deleted.
- Written
C:\Users\<USER>\AppData\Local\Adobe\Acrobat\9.0\Cache\AcroFnt09.lst - Written
C:\Users\<USER>\AppData\Roaming\Adobe\Acrobat\9.0\AdobeCMapFnt09.lst - Written
C:\Users\<USER>\AppData\Roaming\Adobe\Acrobat\9.0\UserCache.bin - Written
C:\Users\<USER>\AppData\Local\Adobe\Updater6\AdobeUpdaterPrefs.dat - Deleted
C:\Users\<USER>\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents-journal
Registry and auto-start
16Settings the file changed, including ways to start again after a restart.
- Set
HKU\S-1-5-21-575823232-3065301323-1442773979-1000\Software\Microsoft\SystemCertificates\Root\Certificates\0174E68C97DDF1E0EEEA415EA336A163D2B61AFD\Blob - Set
HKU\S-1-5-21-575823232-3065301323-1442773979-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyServer - Set
HKU\S-1-5-21-575823232-3065301323-1442773979-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable - Set
HKU\S-1-5-21-575823232-3065301323-1442773979-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings - Set
Software\Adobe\Acrobat Reader\9.0\AVGeneral\bLastExitNormal - Set
Software\Adobe\Adobe Acrobat\9.0\DiskCabs\bForms_AdhocWorkflowBackup
Show all 16 entries for registry and auto-start
- Set
Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable - Set
Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings - Set
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix - Set
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix - Set
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix - Set
{C6F0A433-119F-45DE-A29B-00920B8DF761}\WpadDecisionReason - Set
{C6F0A433-119F-45DE-A29B-00920B8DF761}\WpadDecisionTime - Set
{C6F0A433-119F-45DE-A29B-00920B8DF761}\WpadDecision - Set
{C6F0A433-119F-45DE-A29B-00920B8DF761}\WpadNetworkName - Deleted
HKLM\System\Acrobatviewercpp304
Mutexes
8Named locks a program uses so only one copy runs; malware families often reuse them.
2AC1A572DB6944B0A65C38C4140AF2F494074C3310CAcrobat Instance MutexlkwTlhlkBl4nLa+RZHh5Ig==5cc/lvbQhsQNME+6NHD/xg==2AC1A572DB6944B0A65C38C4140AF2F4af4002B33B0dbaKfjcoZqEY5BO9qnLWOg==
Show all 8 entries for mutexes
2AC1A572DB6944B0A65C38C4140AF2F4af4002B33B8Cx7Rk2iEn5RNj416G9273w==
Chapter 04
Technical details
None of the 62 antivirus engines that checked it flag it.
Sources checked
Every check behind this verdict
6 sources checked · 5 complete · 1 not needed or not applicable. Complete means the check returned a usable result; it does not mean the file is safe.
File fingerprint
- File name
- PDF document
- Format
- Size
- 36.9 MB
- Code signing
- Not applicable to this file type
- Last analyzed
- Oct 22, 2026, 5:14 PM UTC
- SHA-256
f079f659c30748c0c14e1bf93a62b55d5cfdb5e110ebb7111e6c3394ddd09503- SHA-1
86d53c958b3f7bbf366d50f4f56626e6f292a013- MD5
c2e026c4611ace9d8e765405ec4c20b7
First scanned
Antivirus consensus
0 of 62 engines flagged this file
13 of the 75 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-trust11 engines0flagged
View all 75 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
- CylanceClean
- CynetClean
- CyrenClean
- DrWebClean
- ElasticNo result
- EmsisoftClean
- ESET-NOD32Clean
- F-SecureClean
- FireEyeClean
- FortinetClean
- GDataClean
- GoogleClean
- GridinsoftClean
- IkarusClean
- JiangminClean
- K7AntiVirusClean
- K7GWClean
- KasperskyClean
- KingsoftClean
- LionicClean
- MalwarebytesClean
- MAXClean
- MaxSecureClean
- McAfeeClean
- McAfee-GW-EditionClean
- MicrosoftClean
- MicroWorld-eScanClean
- NANO-AntivirusClean
- PaloaltoNo result
- PandaClean
- RisingClean
- SangforClean
- SentinelOneClean
- SophosClean
- SUPERAntiSpywareClean
- SymantecClean
- SymantecMobileInsightNo result
- TACHYONClean
- tehtrisNo result
- TencentClean
- TrapmineNo result
- TrendMicroClean
- TrendMicro-HouseCallClean
- TrustlookNo result
- VBA32Clean
- VIPREClean
- VirITClean
- ViRobotClean
- WebrootNo result
- XcitiumClean
- YandexClean
- ZillyaClean
- ZoneAlarmClean
- ZonerClean
How widely this file has been seen
Moderate prevalence — neither rare nor common. No strong prior applies.
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.