PDF malware analysis — malicious · 495b69a606c126e4

MALICIOUS

PDF

3.1 KB

MD5: 84c8b074aebce77407691960142f4aec SHA-1: 98e7069fcea371bee5242088f103d93143dc2cb6 SHA-256: 495b69a606c126e459f397388558d4331285c1f003f717ec2e3c585af37e787f

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_4324 heuristic suggests exploitation of a media player vulnerability. The unescape() call and the presence of a suspicious JavaScript file (javascript_obj0006_000.js) point towards obfuscated code designed to download and execute a secondary payload. The ClamAV detection further confirms its malicious nature.

Heuristics 6

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (matched in decompressed stream)
ClamAV: Pdf.Exploit.Agent-11967 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-11967
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `edd5919b0356849ef14d6e0b9452c88db862e624fbd643ae8bc266f948584412`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A3	2160 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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