PDF malware analysis — malicious · 8d2b8b15196d0e03

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: d551b7ff2212aeaee7d7d0d8ce2d4183 SHA-1: 9206f957f2f51d638618dba8b5a113d8ca39c014 SHA-256: 8d2b8b15196d0e03c7cd8eb8d0a5bf7e34f95407a99be47918c14c5121f1005b

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The eval() and String.fromCharCode() calls within the JavaScript stream suggest code obfuscation and dynamic execution. The presence of a suspicious extracted artifact named 'javascript_obj0013_001.js' further supports this. The primary intent appears to be the execution of obfuscated JavaScript, likely to download and run a second-stage payload, although the exact payload and destination could not be determined due to 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` `aa2f6bab87ac3430a617879cc06db5e5020d8ac616b426aa25ebd805e8fb915d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D2	12477 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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