PDF malware analysis — malicious · 2e1d0d6e30b64cc6

MALICIOUS

PDF

7.1 KB Created: 2009-11-12 18:17:06 Authoring application: Scribus 1.3.5svn (via Scribus PDF Library 1.3.5svn)

MD5: 8019eda684b3f36ee6992c9316d326c3 SHA-1: 5b2d860a1b61d98688848503d750b9b0c7425c0d SHA-256: 2e1d0d6e30b64cc6e5e068cc1b07134ab2f02c17ec0ccd517e64f6cea24e0eb5

84 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, PDF_UNESCAPE, and PDF_FROMCHARCODE. The extracted artifact 'javascript_obj0013_001.js' is also flagged as suspicious due to hex escape obfuscation and script obfuscation indicators. The primary intent appears to be downloading and executing a second-stage payload, though the exact mechanism is obscured. The confidence is moderate due to the obfuscation.

Heuristics 5

unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Suspicious extracted artifact medium 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.
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)

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `db341802c4cad275464ee4d644c8ac54d9125a6cfbaca7029512c263c83b3683`	pdf-javascript-stream	PDF /JS object 13 at offset 0xF03	13419 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).

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