PDF malware analysis — malicious · ef5db986e745d722

MALICIOUS

PDF

14.5 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 427c29202257801796f6030cd82f82f2 SHA-1: d42a65500ad6322d7d9bb3fe3ba9d88a99057dae SHA-256: ef5db986e745d7221bba9ef6720f72c4b29845489df4c4ea8b7b44185ae62141

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple eval() calls, indicating obfuscation and malicious intent. ClamAV detected this as Pdf.Exploit.Agent-36118, a known exploit. The JavaScript is heavily obfuscated, but the presence of eval() and PDF-specific exploit heuristics strongly suggests it's designed to download and execute a secondary payload. The document body itself does not contain user-facing text, but the technical indicators point to a vulnerability exploit.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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_obj0013_000.js` `2a9189184a9fcf3b1afa998dd7cc9480b09817ffb6c2679ebd13d25c6e1a6fc2`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13322 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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