PDF malware analysis — malicious · d1d0d901019a2eb3

MALICIOUS

PDF

6.4 KB Created: 2009-10-25 20:35:22 Authoring application: Scribus 1.3.5svn (via Scribus PDF Library 1.3.5svn)

MD5: a0444e904175797ae3541a800cc533c3 SHA-1: a6da2a35a6aa49787a0c63f8ea3cb4d24d27b397 SHA-256: d1d0d901019a2eb336aedecd2ec69056e4509e86f2be7f1324ef39757e2ddfc7

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 and PDF_JS. The JavaScript stream, named 'javascript_obj0013_001.js', is obfuscated using unescape() and String.fromCharCode, suggesting it is designed to perform malicious actions such as downloading a second-stage payload. The presence of these indicators and the obfuscation techniques point towards a malicious document.

Heuristics 5

unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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` `b553ad84151a69fd7e14d32bf24a9caf86d67e1461bdd26e9a6e7f108ec587ed`	pdf-javascript-stream	PDF /JS object 13 at offset 0xC11	11101 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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