PDF malware analysis — malicious · 0380e1d4f84a4c70

MALICIOUS

PDF

6.6 KB Authoring application: Tisilarehaue (via 90743Tibedegabala)

MD5: 5f717e6f77977d2ca6d1d49f6c138dbd SHA-1: e2726d84deb796c2609dbdc7c012a026d34655d1 SHA-256: 0380e1d4f84a4c70d41d8f5153ffe4d90cf61dbfa1ac5ca2cd0ee578ef224f03

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 high-confidence ML classifier. The JavaScript appears to be obfuscated and attempts to decode a string using character codes and string manipulation. This decoded string is then evaluated, likely to download and execute a second-stage payload. The ClamAV detection name 'Pdf.Exploit.Agent-36142' further supports the malicious nature of the file.

Machine Learning

Nyx PDF Classifier malicious score 0.9987

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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