PDF malware analysis — malicious · 926f85d668e9f561

MALICIOUS

PDF

8.6 KB Created: 2009-04-11 02:03:30 Authoring application: ixeyHDmEGbRCRJLVuxdEC (via lSvNrsJZfojtZbxw)

MD5: 6098bae7aa2b010d80bb0b3fce2ab94b SHA-1: 45b9b7ad78563bd5ac68db8e924285fbe0cb359d SHA-256: 926f85d668e9f561c81086f68fa9a46b39bb4536286b280d6be776f8b6351b0a

86 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 ClamAV detection 'Pdf.Exploit.Agent-35572' strongly suggests a known exploit. The embedded JavaScript, though obfuscated, likely serves to download and execute a secondary payload, a common technique for initial access. The extracted file 'javascript_obj0007_000.js' is also flagged as suspicious.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape 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_obj0007_000.js` `3fdc3b43c2f4b6a242ede177292804562d7dcadd22734d66f81f9225a2255998`	pdf-javascript-stream	PDF /JS object 7 at offset 0x577	6660 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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