Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 1a9b73ea584dbeec…

MALICIOUS

PDF / .VIR

44.1 KB
MD5: d0724b7b108a1c6a72f419b7c2c210ba SHA-1: adbc9a0cb4b23394522091ecd084d1ae0f243856 SHA-256: 1a9b73ea584dbeec79fdc8ac287df9a035e901f1f0beb0766417bbb196b551c2
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

The file is a PDF containing embedded JavaScript, as indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection for Heuristics.PDF.ObfuscatedNameObject further suggests malicious intent. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for malware delivery. While specific URLs were extracted, they are not definitively malicious, contributing to the uncertainty in family attribution.

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.

FilenameKindSourceSize
javascript_obj0012_000.js
840b5e991d212ccd4189910eb3b3c0113179b70081572b294980c2dfdba70c7a
pdf-javascript-stream PDF /JS object 12 at offset 0x9EA2 3350 bytes