PDF malware analysis — malicious · e18fd500f6befeb9

MALICIOUS

PDF

3.4 KB Created: 2008-09-18 15:54:28 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 52e22ae344f6ca994439cb9c525d5257 SHA-1: ce4644fc506a4edb3b1ed9e4584794bc9463406c SHA-256: e18fd500f6befeb94edb6f2cc0927f736bbbbc1c4a62028574bd68aa19fe0b70

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream, identified as 'javascript_obj0012_001.js', contains obfuscated code with eval() calls and String.fromCharCode usage, suggesting it's designed to download and execute a secondary payload. The high confidence in the PDF_EVAL firing further supports this. Due to the obfuscation, the exact nature of the payload cannot be determined, hence the 'unknown family' classification.

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_obj0012_001.js` `8aa5199a207ce7c6823a7a735ddde0926148679d06f7ab47cdc025420c73d2ee`	pdf-javascript-stream	PDF /JS object 12 at offset 0x3C5	8044 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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