PDF malware analysis — malicious · 78cbaf2a228cd4bc

MALICIOUS

PDF

6.6 KB Authoring application: Tisilarehaue (via b5bdfTibedegabala)

MD5: 848e6b8931f2fde984c7b984e7a05fd5 SHA-1: fcca2744fdea4680d94b51e47c5d2a5ea2a0d4ef SHA-256: 78cbaf2a228cd4bca2b91d9f361b05a7ca6601143261595eb2de34af0a8ca1b5

76 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV heuristic indicates this PDF is malicious, specifically identified as 'Pdf.Exploit.Agent-36142'. Low-level heuristics confirm the presence of JavaScript actions and embedded JS streams within the PDF structure. The document body is heavily obfuscated and unreadable, providing no direct clues to the lure. The embedded JavaScript is the primary mechanism for exploitation, likely downloading and executing a second-stage payload.

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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