PDF malware analysis — malicious · 324bcd96e1567118

MALICIOUS

PDF

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

MD5: 552c9555bc38ba4b84c7d5845bc1d90d SHA-1: e98bc7c2015ca80bbf50368b1131636bd253d6c8 SHA-256: 324bcd96e15671189d4c06d4a4f9401b225f494cc50d3ebc8d7990248a4da350

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple obfuscation techniques, including string concatenation and eval() calls, which is flagged by heuristics as suspicious. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary function of the embedded script appears to be the execution of further malicious code, likely a downloader, as indicated by the 'eval()' calls and the ML_NYX_PDF_MALICIOUS heuristic.

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` `e368ab627f3bfc9a15b9efcd97a4938708cf626724496e38d59b3cb609dccfdc`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13522 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 9 long base64-like blob(s).

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