PDF malware analysis — malicious · 88b48a7a23d11834

MALICIOUS

PDF

16.2 KB Created: 2010-03-05 15:19:50 Authoring application: Laxiwoveja

MD5: d79a0d2e820d1ea4875141faacbb6ef6 SHA-1: 128eac7161ff62fc39dcf608ba3912a9b77dc730 SHA-256: 88b48a7a23d1183430056da978305da19e0c096de0ae9efc4c0296817bf414d5

106 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript, identified by multiple heuristics and a critical ClamAV detection (Pdf.Exploit.Agent-36066). The ML classifier also strongly indicates maliciousness. The presence of JavaScript actions and streams points to the exploitation of a PDF vulnerability to execute code, likely as a payload delivery mechanism. Given the nature of PDF exploits, the most probable initial access vector is spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36066 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36066
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_obj0022_000.js` `22e7b9b95199cc294a88baec03e968aa698abb89fdbf202e98b946c7b2639771`	pdf-javascript-stream	PDF /JS object 22 at offset 0x30AF	971255 bytes

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