PDF malware analysis — malicious · 3c2884e6540cf152

MALICIOUS

PDF

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

MD5: b91e062e3b268a54f904e67a6c08edff SHA-1: c689267f112cb870b006e1dd0b4c12be81efa724 SHA-256: 3c2884e6540cf15243a683826b4eacd28b0391afd3ffb024690535e76ad40d99

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, indicated by multiple PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_LAUNCH and PDF_EVAL heuristics, specifically involving eval() and String.fromCharCode, strongly suggests an attempt to execute arbitrary code. ClamAV detection as 'Pdf.Exploit.Agent-35541' further confirms its malicious nature. The extracted JavaScript file, javascript_obj0027_000.js, likely contains the exploit code, though its specific actions are obfuscated.

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` `5b3fd71774c2dbb58b9743f6d3c0ad095d5cb9313d5922a275cd08f33b0ab65f`	pdf-javascript-stream	PDF /JS object 27 at offset 0x21C1	6745 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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