PDF malware analysis — malicious · 466a1f09f3f8ae40

MALICIOUS

PDF

15.0 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: a8fd702f41e13529e64cddd0c250e4cd SHA-1: 56adebaec6a618b8cbc6c7260f377779d405ca5a SHA-256: 466a1f09f3f8ae40816b5ceacd29caab954882432a48daee080e5aae6d2db6cc

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF sample contains embedded JavaScript with an eval() call, a common technique for obfuscating malicious code. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically targeting PDF vulnerabilities. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, as suggested by the 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.
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_000.js` `14fbe12adac4684669630aa242da444265b2aa3ffe4c46b6de6986243478aeaf`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13790 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 10 long base64-like blob(s).

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