PDF malware analysis — malicious · a7c6339224dfb115

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: 0f0d374148421eb799c9b205f74a1521 SHA-1: 2ad2db7fae745c9e2d525e60ff211d8607132861 SHA-256: a7c6339224dfb1157590e5016d64b2720bdabee5263ae39d0ec86903261d139c

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 stream suggests that the script is obfuscated and likely intended to execute arbitrary code. The extracted artifact 'javascript_obj0013_001.js' further supports this. The script's purpose is to download and execute a second-stage payload, though the exact mechanism is obscured by the 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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `407b3a5f69715dd1b1981e9ff7a262992e236a835bfcde91766780f36a5f685c`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D2	12631 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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