PDF malware analysis — malicious · 1a5740de59249951

MALICIOUS

PDF

2.7 KB Created: 8898-01-01 Authoring application: 9582

MD5: c6512f22e24cec9017a666c493e45aa3 SHA-1: 429dba556851eaf7a3a7565974b274a6a5bd0272 SHA-256: 1a5740de59249951379b89dad33b089de1f5882d6e6c81039d017f87879e7981

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell Script Execution

The PDF file was flagged as malicious by multiple heuristics, including a high-confidence ML classifier and ClamAV detection (Pdf.Exploit.Agent-36014). It contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS firings, and an extracted JavaScript file. The ML classifier's high score and the specific ClamAV detection suggest this PDF is designed to exploit a vulnerability, likely through the embedded JavaScript, to deliver a malicious payload. The document body content is unreadable, but the presence of JavaScript and the exploit detection strongly indicate a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `d4157902c6f8f094bd0ce3cecff31241093f1b6f070ca82b20a92ccbadf89af7`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4780 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).

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