Malicious RTF — malware analysis report

Static analysis result for SHA-256 4488de9b8c97006d…

MALICIOUS

RTF

120.5 KB First seen: 2026-06-22
MD5: 905d448a2c42320cd71429634f7c599f SHA-1: 269cae4a3a7031ffa89a96569ef95656395305f1 SHA-256: 4488de9b8c97006d9784b08dd4d8d41de2473253dd4d58e93e8b2a68eb6a97db
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_off00003906.bin rtf-objdata-decoded RTF \objdata at offset 0x3906 1504 bytes
SHA-256: 2f9277801013549254984620eac1c43910aea185ec2cc804bcc8574f35003ca4