PDF malware analysis — malicious · 4d38fba2b5e80f10

MALICIOUS

PDF

58.6 KB Created: 2006-02-16 15:03:51 -08:00 Authoring application: lice (via ubst)

MD5: 285c30293125bc83e4ba9759701b10cc SHA-1: 8e155fa970ff8ed579864437d8b3514e80e8bcf4 SHA-256: 4d38fba2b5e80f10cc0ebea903967f55d4f3ff909a14ee852225626c131f1721

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by ClamAV and a machine learning classifier. It contains embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities to download and execute further malicious content. The presence of JavaScript actions and embedded JS streams strongly suggests an exploit is present. The ML classifier's high confidence score further supports this assessment.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

ClamAV: Pdf.Exploit.Dropped-94 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-94
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_obj0076_000.js` `c7d990473434c7e99ed76785f8939238f0df249a94a295aab91eece40f507330`	pdf-javascript-stream	PDF /JS object 76 at offset 0x94B	50105 bytes

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