PDF malware analysis — malicious · cd34c24925f1068a

MALICIOUS

PDF

3.2 KB Created: 2008-12-04 14:38:01 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 969dbed04b34ba4d2d39c6564e969159 SHA-1: 4a86a4f8fffd41a250bc3847163d84f84191f857 SHA-256: cd34c24925f1068a55d03a43b8a1e5d9181685ad23b44d0955f5c60718630ba6

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The presence of eval() and String.fromCharCode suggests obfuscation and dynamic code execution. The deobfuscated.js artifact further supports the analysis of malicious JavaScript. The primary function of the script appears to be downloading and executing a secondary payload, though the exact URL or execution method is not directly extractable from the provided evidence. The confidence is lowered due to the lack of directly observable network indicators or specific payload details.

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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_000.js` `451db334b5001f2ddff68a6c622578ca8187526cffd43c81d1a1139c8cd275e1`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3CE	5480 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).
`deobfuscated.js` `58acff8df6eba13db212287319269c78809769d484ea9e6856508fa746014015`	deobfuscated-js	PDF JavaScript deobfuscation pass	11975 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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