PDF malware analysis — malicious · 79824bb4a31359ce

MALICIOUS

PDF

3.2 KB

MD5: fe5f41000bcb59572153e9d47b7a541f SHA-1: 7555b881e6f25fb24d357ddae6db01ff355005df SHA-256: 79824bb4a31359ce6d5d1e8f13d05eeabb07aec343ed3e4abf707839ce1cf7ef

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is identified as a malicious PDF by ClamAV (Pdf.Exploit.Agent-36121) and a machine learning classifier. It contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics, which is a common method for exploiting PDF vulnerabilities. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload. The ML classifier's high confidence score further supports the malicious nature of the file.

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` `b8deee08b8ab95eab64726770820e1016e214f092ecc8c625c811ac6075513bd`	pdf-javascript-stream	PDF /JS object 7 at offset 0x9C8	469 bytes

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