Malicious RTF — malware analysis report

Heuristics 6

• Composite Moniker — CVE-2017-8570 (drops SCT script) critical CVE related CVE_2017_8570
  RTF \objdata decodes to OLE data containing the Composite Moniker — CVE-2017-8570 (drops SCT script) CLSID — the vulnerable control/moniker is embedded directly in the document's object stream, the delivery shape of this exploit. RTF objects auto-render when Word opens the file.
• 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.
• Automatically linked OLE object high RTF_OBJAUTLINK
  RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
• OLE object data medium RTF_OBJDATA
  RTF contains 1 \objdata section(s) — embedded OLE objects
• OlePres presentation stream in RTF OLE object medium RTF_OLEPRES_STREAM
  RTF contains an embedded OLE object with an OlePres presentation stream. OlePres is an OLE presentation marker and is not enough on its own to identify CVE-2025-21298.
• 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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