PDF malware analysis — malicious · aac5b5d75bdbd582

MALICIOUS

PDF

44.8 KB Authoring application: substr

MD5: d548d91827046b6a2645cadcbe35fc70 SHA-1: 04263bab3828724ec9d20d3527286cd58321c436 SHA-256: aac5b5d75bdbd5828078bf6f85162f211f5edf5c7d71e0850028669c8eebb465

106 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious Link: Malicious File

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent. While the specific JavaScript functionality is not detailed, its presence within a PDF typically aims to exploit vulnerabilities or trick the user into execution, leading to further malicious activity. No specific IOCs were extracted from the limited document body or embedded scripts.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

ClamAV: Pdf.Malware.Agent-7990165-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Malware.Agent-7990165-0
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_obj0001_000.js` `df0764d46c2c38f348e473c558107237efeafe278a71faf9c134670dfb08ba97`	pdf-javascript-stream	PDF /JS object 1 at offset 0xB098	415 bytes

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