PDF malware analysis — malicious · 4635cf479bafe8d1

MALICIOUS

PDF

2.7 KB Created: 8478-01-01 Authoring application: 2708

MD5: f999c79ef6b388e0e34e42d01abf4ac8 SHA-1: 48f75a110e1a4d9cee5a6daf4408204668fa4b9a SHA-256: 4635cf479bafe8d1976504c6af4af04998b1a3f0ede5e190d4248d7981e5ca98

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by multiple engines, including a high-confidence ML classifier and ClamAV, which identified it as Pdf.Exploit.Agent-36014. The presence of embedded JavaScript, indicated by heuristic firings and an extracted JS file, suggests an attempt to exploit vulnerabilities within the PDF reader. The ML classifier's output strongly supports the malicious classification, and the extracted JavaScript file is a key indicator of the attack vector.

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` `e23931862310cb1f02c9e693eb5f5118dd5d816cbfc2fe65de8e0ef55e3c1ef4`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4782 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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