PDF malware analysis — malicious · aa83c75b1a86ac67

MALICIOUS

PDF

6.6 KB Authoring application: Tisilarehaue (via d4b67Tibedegabala)

MD5: e4a2a60f860ea47c074807482cc54360 SHA-1: 14bd0243a4d0d2ee6985f88adc6dd512ba49bbf6 SHA-256: aa83c75b1a86ac67bf22cba2499b0f2f9abb13824fe42da6b0082a416818aec2

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV detection and high ML confidence indicate this PDF is malicious. The presence of embedded JavaScript, flagged by heuristics, strongly suggests an exploit is being used to execute code. The JavaScript likely downloads and executes a secondary payload, as is common with PDF-based exploits. The SHA256 hash is included as a primary IOC.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36142 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36142
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_obj0010_000.js` `d4dce4f95f7146e3b127d68edf45ceb045483a205d9e9a2a53d6e6b80d83b663`	pdf-javascript-stream	PDF /JS object 10 at offset 0x1230	1728 bytes

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