Pdf.Exploit.Agent-35541 PDF malware analysis — malicious · adedbaa64059ee48

MALICIOUS

PDF

10.7 KB Created: 2009-02-19 14:45:49 -02:00 Authoring application: Writer (via OpenOffice.org 3.0)

MD5: cb5a1c3d50962efc0571dabf2b5f0a2c SHA-1: 5b4066cdd8f19b13564669a22ede15425a11d95d SHA-256: adedbaa64059ee48d6e24836f3845a9c638502530c65c323331e7f10ef80f08c

166 Risk Score

Malware Insights

Pdf.Exploit.Agent-35541 · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is identified as malicious by ClamAV with the signature Pdf.Exploit.Agent-35541. Static analysis revealed embedded JavaScript with eval() and String.fromCharCode() calls, indicating obfuscated code execution. A PDF launch action was also detected, suggesting the exploit aims to trigger further malicious activity, likely downloading and executing a second-stage payload.

Heuristics 7

ClamAV: Pdf.Exploit.Agent-35541 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35541
Launch action high PDF_LAUNCH

PDF contains a /Launch action with an unresolved or extension-less target — treat as potentially dangerous
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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.
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. (matched inside decoded stream)
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_obj0027_000.js` `ccf5b2255d7734c673d16845ee6c449e086925695722f8882f3268702c78e4f2`	pdf-javascript-stream	PDF /JS object 27 at offset 0x21C1	6738 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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