PDF malware analysis — malicious · cb91682fb172bd2c

MALICIOUS

PDF

6.6 KB Authoring application: Tisilarehaue (via 5438dTibedegabala)

MD5: 1e2d2ac7a304fb47b4d8bee5a07b9b86 SHA-1: 80d64623b41503a37b6131697fc4936074457799 SHA-256: cb91682fb172bd2c118bf1c04b6d2aedd7e7f531ace4274ad7362f418b1c1469

76 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV heuristic indicates the file is a known PDF exploit (Pdf.Exploit.Agent-36142). Low-level heuristics confirm the presence of embedded JavaScript, which is commonly used to trigger vulnerabilities within PDF viewers. The JavaScript action and embedded JS stream suggest the script is intended to download and execute a second-stage payload, though the specific actions are not fully discernible from the provided evidence.

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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