PDF malware analysis — malicious · 241b7ffc23a40ce2

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: 85951b6cc52aaed18880a30af2dbc907 SHA-1: 1f3221a7e25198ba0e6ebba71888f77ff7f00b67 SHA-256: 241b7ffc23a40ce2edfd3197453e8c915ae03df253b4da393c9d694d9dd6c376

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 an eval() call and String.fromCharCode within the decoded JavaScript stream (offset 0x40E) strongly suggests that the script is obfuscated and intended to execute arbitrary code. The extracted artifact 'javascript_obj0013_001.js' further supports this. The script's obfuscation and use of eval() point to a downloader or exploit execution pattern, though the exact payload cannot be determined from the provided evidence.

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` `36dafaa6e7727472e86f4cabb2190062e620a37bb4a5a658bda3f819b823f5fc`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D2	12532 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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