PDF malware analysis — malicious · 8847103df89d9c02

MALICIOUS

PDF

3.2 KB

MD5: c4b98af0f6a23b40701d7f3faefa0b79 SHA-1: 1dec53752bc46115f8da2f870715dfaf3551c996 SHA-256: 8847103df89d9c02e30940a840dcdc73b335b9b047f26ea297158e6dfef0b084

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identifying it as Pdf.Exploit.Agent-36121. The embedded JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to download and execute a secondary payload, a common technique for initial access.

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` `f44b0b13038c1ce71b6b3c296232120911970e37f38ab4e2e4430d2d8e81fcbc`	pdf-javascript-stream	PDF /JS object 7 at offset 0x9C5	464 bytes

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