Malicious PDF — malware analysis report

Static analysis result for SHA-256 58bfd94bd68b696b…

MALICIOUS

PDF

45.3 KB
MD5: 7631a058f9cfc5cf9af747adf711c51f SHA-1: 852d5237af205e5fde90ebb0640e4d6257ab8139 SHA-256: 58bfd94bd68b696b6ab79e3a1d48e14c0a7f0f33b4f49786771f29ed837b3aa5
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains embedded JavaScript, as indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV also flagged it as Heuristics.PDF.ObfuscatedNameObject, suggesting malicious intent. The embedded JavaScript, named 'javascript_obj0012_000.js', is likely responsible for downloading and executing a second-stage payload. The presence of XFA form elements (PDF_XFA) can sometimes be used to host or trigger scripts.

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
e6e84f0f82d06d6123d2bf528c119deb05f02157036c2fb732a9921824b223f6		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1EE 3609 bytes

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