Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 c831b7b0829fbd6c…

MALICIOUS

Office (OLE)

194.5 KB Created: 2017-11-07 14:51:00 Authoring application: Microsoft Office Word First seen: 2017-11-20
MD5: 5b8eb0a48665f89d5f11821984dec49a SHA-1: 85c9eb51129acdfc7fb1f1a1a9b528dd0d7ae704 SHA-256: c831b7b0829fbd6ca87395fb071547f15296a134a4c40dcab484dc3d7ffac27d
64 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The file is detected as a malicious dropper by ClamAV. Although VBA macros could not be extracted due to an unsupported format, the presence of embedded URLs and the overall detection suggest it's designed to download and execute further malicious content. The document body appears to be corrupted or heavily obfuscated, preventing a clear understanding of its lure.

Heuristics 3

  • ClamAV: Doc.Dropper.Agent-6373210-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6373210-0
  • Unsupported Office format for VBA extraction info OFFICE_FORMAT_UNSUPPORTED
    olevba could not extract VBA macros (TypeError); format-agnostic byte-level scans still ran. Likely legacy, encrypted, or malformed OLE/OOXML — re-scanning the same bytes will yield the same outcome.
  • 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/xap/1.0/ In document text (OLE body)
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In document text (OLE body)
    • http://ns.adobe.com/photoshop/1.0/In document text (OLE body)
    • http://purl.org/dc/elements/1.1/In document text (OLE body)
    • http://ns.adobe.com/xap/1.0/mm/In document text (OLE body)
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#In document text (OLE body)
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#In document text (OLE body)
    • http://schemas.openxmlformats.org/drawingml/2006/mainIn document text (OLE body)

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