PDF malware analysis — malicious · f6e4e25184222477

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: a72e90a7c9abff054d738d259dc296ba SHA-1: 088a71eb9e9f57e254b7cf3f95da5a18901f39bb SHA-256: f6e4e25184222477fb1aece6af8f6fa6b36a7b2772aa1f341c16ecd38cb4358f

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript that utilizes an eval() call, a common technique for executing obfuscated or dynamically generated code. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically targeting PDF exploits. The JavaScript appears to be designed to download and execute a second-stage payload, as suggested by the eval() function and the presence of obfuscated code. The reconstructed string 'eval(tts dff[jio ol])' is the primary indicator of the malicious script's execution.

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` `2e840032f798efd5259abf72b222d89bc267ed29f47067e7ea7b587f434f50d1`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13443 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).

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