PDF malware analysis — malicious · 0308004836fe006a

MALICIOUS

PDF

6.6 KB Authoring application: Tisilarehaue (via 85cb5Tibedegabala)

MD5: 574f93c43c91c2d15414fcbfa3658608 SHA-1: ce7f4ddb549a67f72987b2d8a708574a5259467f SHA-256: 0308004836fe006a22709e81821369d334491539b44d66eac2ee709e87823699

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The critical ClamAV detection and high ML confidence indicate malicious intent. The embedded JavaScript, though obfuscated, contains logic for decoding a string using character codes and executing it via app.eval(), strongly suggesting it downloads and executes a second-stage payload. The PDF structure and heuristic firings confirm the presence and execution of JavaScript within the document.

Machine Learning

Nyx PDF Classifier malicious score 0.9989

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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