PDF malware analysis — malicious · b1d469136eced0f0

MALICIOUS

PDF

6.1 KB Created: 2009-01-01 12:31:37 Authoring application: T47CJt2 (via G84j16)

MD5: c3848fa0f1f33d43c9bba0d3e505900f SHA-1: 1266e2753c2c4bb624bed32af2f1d022718082fe SHA-256: b1d469136eced0f0056729088c3d69a161bbbf58a351bdab47c6132877bbc0c0

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.002 Spearphishing Attachment

The file is identified as a malicious PDF by ClamAV and a machine learning classifier. Heuristics indicate the presence of embedded JavaScript, which is often used to exploit vulnerabilities or download additional malware. The ML classifier output of 0.999957 strongly suggests malicious intent. The embedded JavaScript stream is the primary mechanism for the attack, likely leading to the execution of a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Dropper.Agent-6330224-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-6330224-0
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.
Suspicious extracted artifact info 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `c34c2aa4474f1f08747b4b5b05e97a79ce1c56a298cfffbbe43a2ef42cdd9d91`	pdf-javascript-stream	PDF /JS object 7 at offset 0x235	5037 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).

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