PDF malware analysis — malicious · f3b9dcc5b4845f06

MALICIOUS

PDF

2.7 KB Created: 6313-01-01 Authoring application: 7748

MD5: e1728448b7912dd4bd218cdc1754c596 SHA-1: b56357e74edaf7957f13ba3125a26d6307ae179f SHA-256: f3b9dcc5b4845f06768d0c699d7fd825a92e34b6691e13628c957483a580c50b

126 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 ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as Pdf.Exploit.Agent-36014. The embedded JavaScript file, 'javascript_obj0013_001.js', is likely responsible for the exploit, potentially downloading and executing a second-stage payload. The presence of obfuscation indicators in the extracted artifact further supports this. The attack pattern involves leveraging PDF vulnerabilities to run malicious scripts.

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` `105fa7a3c41afd9e3a1fbe1b87b917cf998a312774c4ca29570c6d30232327eb`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4772 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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