PDF malware analysis — malicious · 32ef7bc8bff79d4c

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: 284b1cb0d84995d1e95c5b2e452337a8 SHA-1: ac002cd68ad7178abb1828db833eee8ba9e25592 SHA-256: 32ef7bc8bff79d4c568b29b4f94795aa4c0892da4a927b7f4a9c9b74403ed829

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of an eval() call and String.fromCharCode within the decoded stream suggests that the JavaScript is obfuscated and likely intended to download and execute a secondary payload. The extracted artifact 'javascript_obj0013_001.js' further supports the presence of malicious script content. Due to the obfuscation, the exact nature of the payload cannot be determined, leading to an 'unknown family' classification and a moderate confidence score.

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` `1c67307481b4c70da557635ffaf18f515e9a3af41eb8036d8d07bdfce201dd62`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D2	12677 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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