PDF malware analysis — malicious · 1f0d0d6eb691602a

MALICIOUS

PDF

6.7 KB Created: 2009-11-17 23:22:12 Authoring application: Scribus 1.3.5svn (via Scribus PDF Library 1.3.5svn)

MD5: c9e1b72e632cee574c9baa6d20a4aacc SHA-1: fcab144391ca925ad38ef5b6ed98d6c18325360b SHA-256: 1f0d0d6eb691602a63c3d128ddfb9972ffbd4bff7cca532f3681b7a57a4c08bc

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, PDF_UNESCAPE, and PDF_FROMCHARCODE. The extracted artifact 'javascript_obj0016_001.js' likely contains malicious code. The script's purpose is to download and execute a second-stage payload, which is a common technique for initial access and further system compromise. The obfuscation suggests an attempt to evade detection.

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_obj0016_001.js` `fd70e8976ad51aa6275567968ac1acf2d0b2ae192fb78af7ce207aa7ecd01641`	pdf-javascript-stream	PDF /JS object 16 at offset 0xC9A	12549 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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