PDF malware analysis — malicious · 64a2e7b43481eb25

MALICIOUS

PDF

12.6 KB Created: 2010-03-17 13:16:23 Authoring application: Qihenekoqewimqifce

MD5: faad6f74cb35b553ba0f1fa701bf0bd0 SHA-1: 9581e00b750e3e771c8783f594b968f3e552a6e3 SHA-256: 64a2e7b43481eb25717b82073b62ed53614ebeb2984276e2e20af2281eee7f50

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-20203). The ML classifier also strongly indicated maliciousness. The JavaScript is obfuscated but its presence and the exploit detection suggest it is used to download and execute a second-stage payload, a common technique for initial compromise via malicious documents.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

ClamAV: Pdf.Exploit.Agent-20203 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-20203
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_obj0020_000.js` `dfce10c25364df020b9e0e890640f0cc577a5cdd82ece8152cd56081a1f00c64`	pdf-javascript-stream	PDF /JS object 20 at offset 0x28C6	83028 bytes

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