PDF malware analysis — malicious · f78982680d577d8a

MALICIOUS

PDF

2.7 KB Created: 8353-01-01 Authoring application: 1264

MD5: f0c856a81287b35fff108ec6c897a92a SHA-1: 2163c80c4710b0f80505cccad63d71d677fb832f SHA-256: f78982680d577d8ac91608fb959ef46e07b207efd062021ad862dfd98ddae23e

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically targeting PDF exploits. The extracted JavaScript file, 'javascript_obj0013_001.js', is likely responsible for the malicious activity, potentially downloading and executing a second-stage payload.

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` `c5967522c93ea0c07187b508937faf430e2899124ed4c245e03728aa6676755e`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4809 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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