Malicious RTF — malware analysis report

Heuristics 6

• Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED
  RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
• \objupdate forces OLE activation high RTF_OBJUPDATE
  RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
• Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX
  RTF contains ~1508KB of hex-encoded data inside \objdata sections — may hide a payload
• OLE object data medium RTF_OBJDATA
  RTF contains 1 \objdata section(s) — embedded OLE objects
• Embedded OLE object medium RTF_OBJEMB
  RTF contains \objemb — embedded OLE object
• 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.microsoft.com/office/word/2003/wordml In RTF body

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