PDF malware analysis — malicious · 331268fb76685f47

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: 2e81a2a613529a3cc5508280d2e4ca75 SHA-1: 1d4494fa72fe782c1f0505db7036975d26b2f1e7 SHA-256: 331268fb76685f47f68ce8c17a4cc4084682f5537c5609feaaae3509217c5306

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes an eval() call, a common technique for obfuscating malicious code. The ClamAV detection 'Pdf.Exploit.Agent-36118' strongly suggests exploitation of a known PDF vulnerability. The JavaScript is heavily obfuscated, but the presence of eval() and the heuristic firings indicate it's designed to execute arbitrary code, likely downloading and running a secondary payload. The document body itself does not provide direct clues to the user-facing lure.

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` `74e0098df72b9b33725bedcc5355161da986ff2d59155953285e155b1a37ef79`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13249 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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