Malicious RTF — malware analysis report

Static analysis result for SHA-256 ac577dd4a35bc0dc…

MALICIOUS

RTF

3.9 KB First seen: 2026-06-27
MD5: 2000074ebf3ccd606cea1c2c4bb663b6 SHA-1: ca18c113ab183a12f968da910ef84907ce978e20 SHA-256: ac577dd4a35bc0dc2e2045e5027519b3eee05b98d4a8a59fc767ab159066ed8a
120 Risk Score

Heuristics 3

  • Split hex Equation Editor ProgID + OLE object critical CVE likely RTF_EQUATION_EDITOR
    RTF embeds the Equation.3 ProgID as hex bytes near OLE object activation and splits the byte stream with whitespace or an ignorable RTF group. This is an Equation Editor OLE activation surface commonly used by CVE-2017-11882 / CVE-2018-0802 exploit documents.
  • \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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000003b.bin rtf-objdata-decoded RTF \objdata at offset 0x3B 1971 bytes
SHA-256: 5de07dbd541ae6bae579c358e69f30316ac06459652e080c683303cb074058b4

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