PDF malware analysis — malicious · 4466ca63ea1586cf

MALICIOUS

PDF

3.5 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 13998ba808843cfa3d2505b659742406 SHA-1: 547bb09405d651066ff0af8058887be8289eb43b SHA-256: 4466ca63ea1586cf4924b7d8025411b481a1fbf8eaadfcbb50c9c861a2e285f6

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a PDF_EVAL heuristic firing suggests that the JavaScript code is likely using eval() to execute obfuscated code, and PDF_FROMCHARCODE further supports this by indicating the use of String.fromCharCode for obfuscation. The extracted artifact 'javascript_obj0013_001.js' is also a strong indicator of malicious JavaScript execution. The script's intent is to download and execute a second-stage payload, though the exact URL is not directly extractable due to 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` `9bdad75a73fedfe0b37866b20e7615ac7275096ec6d59f7d58db10107ab3fe3b`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D2	8871 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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