Malicious RTF — malware analysis report

Heuristics 4

• Decoded Equation Editor payload + PE critical CVE likely RTF_EQUATION_EDITOR
  RTF decodes to an Equation Editor ProgID adjacent to OLE activation and the same decoded object stream contains embedded PE bytes. This matches the Equation Editor exploit surface used by CVE-2017-11882 / CVE-2018-0802 documents, while requiring payload evidence to avoid flagging benign Equation references.
• \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.
• OLE object data medium RTF_OBJDATA
  RTF contains 1 \objdata section(s) — embedded OLE objects
• Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
  One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

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