Malicious RTF / .OLE — malware analysis report

Static analysis result for SHA-256 a184462faa2f3a2a…

MALICIOUS

RTF / .OLE

323.0 KB
MD5: b7ce7ad9f6a6a4d898f9851e92e7dd9c SHA-1: a7cefdad7e19a306662ee6c00e058ebe43b9fcf9 SHA-256: a184462faa2f3a2a82439e7902fb5d47f4a6a784cff86931fb69ece85ad5d5e0
62 Risk Score

Malware Insights

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

The RTF document contains an embedded OLE object, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that this object is designed to be activated, likely to exploit a vulnerability. The extracted artifact 'objdata_00_off00000062.bin' is suspicious due to its size and high entropy, further supporting the malicious intent.

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_off00000062.bin
a5ed7e9bd5f664160484294918dfe8d167bcd56ba2518a179726d3057c9e090c
rtf-objdata-decoded RTF \objdata at offset 0x62 165239 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.