Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 b7b970eaff26baab…

MALICIOUS

RTF / .DOC

163.6 KB
MD5: e9b51901366a4117cd043bf75e4a5134 SHA-1: 45e2b899d6bfcf3d830538fd02757890c3c17bf5 SHA-256: b7b970eaff26baabffd607c63e2825aee992cc8de6de46cec14b7b1a3c2ea181
129 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious File

The RTF document contains OLE object data and an \objupdate directive, indicating it's designed to activate embedded objects. This strongly suggests the file is a dropper or exploit container. The extracted objdata artifact is likely the payload or a component thereof. Without further analysis of the objdata, the exact family and final payload remain unknown.

Heuristics 3

  • \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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00001bd7.bin
d2ae016fa83f17945509cd6fda5231d4ba1c48afffb1903f7f424b5a6e467230
rtf-objdata-decoded RTF \objdata at offset 0x1BD7 64057 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.93, consistent with packed or encrypted content.