PDF malware analysis — malicious · 9f03bbd88344d14d

MALICIOUS

PDF

2.7 KB Created: 286 Authoring application: 9403

MD5: f60ec082d856bb033fa3162ab3e64d18 SHA-1: 6623a1dfa63ca88170e510c4fb3e70ee0dae4820 SHA-256: 9f03bbd88344d14d988385442299edf06cce59ad998570aa2e4a5e60c19832d8

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file was flagged as malicious by ClamAV (Pdf.Exploit.Agent-36014) and a machine learning classifier. It contains embedded JavaScript, which is obfuscated and suspicious according to static triage. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, as indicated by the ML_NYX_PDF_MALICIOUS heuristic and the presence of an extracted JavaScript file.

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` `1e789d8d5548adfe7b6aca677c51f7532dddd685666495d14d32d8986f10110e`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4796 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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