PDF / .VIR malware analysis — malicious · a42fd8765ab65139

MALICIOUS

PDF / .VIR

44.1 KB

MD5: 1e3502eb4c4fbec56330e843d4ce6e63 SHA-1: 9e35e81ae094a35812b7af585385d749e8a6796e SHA-256: a42fd8765ab6513973cbbb69a79a5c58cf13b0477010c0e6e207e4b6bd273871

84 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF document was flagged by ClamAV with 'Heuristics.PDF.ObfuscatedNameObject', indicating malicious intent. Embedded JavaScript streams and XFA form elements were detected, suggesting the file is designed to execute code. The obfuscated nature of the JavaScript and the presence of these elements point towards an attempt to download and execute a secondary payload or exploit a vulnerability. The document body was heavily obfuscated and unreadable.

Heuristics 5

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/2.6/
- http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0012_000.js` `840b5e991d212ccd4189910eb3b3c0113179b70081572b294980c2dfdba70c7a`	pdf-javascript-stream	PDF /JS object 12 at offset 0x9EA2	3350 bytes

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