PDF malware analysis — malicious · c1679e8c9f6c85e3

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: 70f9e52a69f4b393dc5ccef77ef5c2b1 SHA-1: c8359416a4533b5779ee14f04e5c1844ddddafc5 SHA-256: c1679e8c9f6c85e3b9172abf6f99dd69ec779ac02771d6dd9c76c08b43b3a00f

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_FROMCHARCODE firings strongly suggests that the JavaScript is obfuscated and designed to execute arbitrary code. The extracted artifact 'javascript_obj0013_001.js' is likely the source of this malicious script. The script's purpose is to download and execute a second-stage payload, though the exact URL or execution method is obscured by 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` `a505a1b8381d271a2054416e82327974f4a2c84fd3d62a8e806e7aee3103c5b5`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D2	12610 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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