PDF malware analysis — malicious · f3975be5e4756191

MALICIOUS

PDF

2.7 KB Created: 2870-01-01 Authoring application: 9986

MD5: dce4b6607c09d21a71bebf9eac9c39ae SHA-1: 827f2905fd81eb555504bb898dee253ca5379ea8 SHA-256: f3975be5e4756191c617281e96f5a3f65db1f1d0d41589528b65034bb887b52d

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, as 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 JavaScript is obfuscated, preventing a detailed analysis of its specific actions, but it is likely designed to exploit a vulnerability within the PDF reader to download and execute a secondary 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` `6138ac8d6550a3283795719d57bae1f8f6a37c75bfcfec25d6503461ee400d44`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4788 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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