PDF malware analysis — malicious · 809a1d3b74584982

MALICIOUS

PDF

3.3 KB

MD5: 3aba5f5e2360750c9f5e990c6a0c58f5 SHA-1: f5c3f3554d22d0c4d89f961dc8f2463f6cdcd29b SHA-256: 809a1d3b745849827ba1ee9dc9a2cfa9009794aca4d8df788a41ddad73552295

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, identified by heuristics and a critical ClamAV detection (Pdf.Exploit.Agent-36121). The JavaScript code reconstructs a string from the PDF's title metadata and then executes it. This likely serves to download and execute a second-stage payload, a common technique for PDF-based exploits.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36121 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36121
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_obj0007_000.js` `0cec68741268baad7fc9c8bc80cab0c7a89dc146e4b6ec2d553e5ac0ffc5303f`	pdf-javascript-stream	PDF /JS object 7 at offset 0xA88	320 bytes

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