PDF malware analysis — malicious · 848978428eb8bfe9

MALICIOUS

PDF

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

MD5: 49f12e244ad703671e3c74f933268787 SHA-1: 0a7e37e5bc3b494174eaa3d6e5a96b73f44b7864 SHA-256: 848978428eb8bfe91b1827973bfd2b3ba1251df1d7ee52d982f2277069327a8d

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 JavaScript stream is obfuscated and contains an eval() call, suggesting it's designed to execute arbitrary code. The heuristic 'Suspicious extracted artifact' also flags 'Script obfuscation indicators' within the javascript_obj0013_001.js file. The primary function of this script appears to be downloading and executing a secondary payload, though the exact URL or execution method is obfuscated within the script.

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` `a86f9100b7bb0e3e18638637125cf97fec71115282f2b662980d42e95b94d29c`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D2	12656 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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