PDF malware analysis — malicious · 3679db06772c0aa0

MALICIOUS

PDF

5.3 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 8ac17a5b0381ea8017a2518ecc7a8041 SHA-1: b68bfa0734fe9c4e45d8f346983830d8b85072f9 SHA-256: 3679db06772c0aa0c5871568d735dd54ef5d678947198055bebc91411c3631ee

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_FROMCHARCODE rules, along with the 'Script obfuscation indicators' in the static triage, suggests that the JavaScript is heavily obfuscated and likely designed to execute malicious code. The extracted JavaScript files, 'javascript_obj0013_001.js' and 'acroform_b64_00.js', are the primary artifacts of this malicious behavior. The exact payload or intent of the script could not be fully determined due to obfuscation.

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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `af06290006628f1290b7945350a514c9a4c4fe44cdfccb43db5b422bb807d3d5`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36C	7041 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`acroform_b64_00.js` `1070a9e959d45b06eee8eaf85e853e1cafb14055bd2731cf09c6bc2ed6e584b5`	deobfuscated-js	PDF AcroForm base64 (decompressed) at offset 0x710	4619 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

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