PDF malware analysis — malicious · 46b3bfbe4a1d769f

MALICIOUS

PDF

3.5 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 8ec5d4e5d13d0a5e32f7decf1709fa8f SHA-1: 5cc242c6522ceb727a33b7f647a625e0b00222e8 SHA-256: 46b3bfbe4a1d769f1125b8119b665a55f2a727ead2a1c40ae517aa246d7bd517

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The JavaScript stream is obfuscated and uses eval() and String.fromCharCode, suggesting it's designed to execute arbitrary code. The extracted artifact 'javascript_obj0013_001.js' further supports the presence of malicious scripting. The exact payload or intent is unclear due to obfuscation, but the techniques used are consistent with delivering a second-stage exploit or malware.

Heuristics 5

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_obj0013_001.js` `96b5da3c095b9cd063270543bc62432c254b5cbc50927ff59f2d83ab93def3c4`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D2	8871 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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