Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 17e8a9fb95f51898…

MALICIOUS

Office (OLE)

118.5 KB Created: 2008-01-24 07:45:00 Authoring application: Microsoft Office Word
MD5: 3844b1635e7c4a1c41e1187a08427f7a SHA-1: b705df67df09c853e6b28d874a0f85053a1e627a SHA-256: 17e8a9fb95f5189897dd5db6437454df33a20ffae9de6c1ca8fd73dda3dc1632
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The OLE document exhibits an unusually large slack space and an appended executable payload, indicating it likely functions as a dropper or downloader. The presence of an embedded URL, though benign in this instance, is a common tactic for malware delivery. The heuristics strongly suggest the file is malicious and intended to transfer additional tools.

Heuristics 3

  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 121,335 bytes but its declared streams total only 20,639 bytes — 100,696 bytes (83%) live in unallocated sector slack. This is the canonical hiding place for pre-macro-era Office exploit payloads (XOR-encoded shellcode reached via a parser pointer-corruption bug in the document structure).
  • OLE file has appended executable-looking payload bytes high OLE_APPENDED_PAYLOAD
    OLE compound file contains a large high-entropy region beyond the declared major streams and that region includes shellcode, PE, or loader API markers. This is a payload-carrier signal, not a specific CVE attribution by itself.
  • 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://schemas.openxmlformats.org/drawingml/2006/main

Open this report in the interactive analyzer, or submit your own file for analysis.