PDF malware analysis — malicious · 073265db935c013b

MALICIOUS

PDF

6.6 KB Authoring application: Tisilarehaue (via 3f9e9Tibedegabala)

MD5: 2638a2e73b1218cd07fad937ff7b0975 SHA-1: 476ac02855d30caf54511640f8d5c3f293d74297 SHA-256: 073265db935c013bd17b04f5efef74243ace5f1bc9ed381d803d76ac357b4c74

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript, flagged by multiple heuristics and a critical ClamAV detection (Pdf.Exploit.Agent-36142). The JavaScript code appears to be obfuscated but attempts to decode and execute a string, likely a second-stage payload. The ML classifier also strongly indicates maliciousness. The primary attack pattern is likely spearphishing attachment, leading to client-side exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.9989

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36142 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36142
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_obj0010_000.js` `d4dce4f95f7146e3b127d68edf45ceb045483a205d9e9a2a53d6e6b80d83b663`	pdf-javascript-stream	PDF /JS object 10 at offset 0x1230	1728 bytes

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