Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 8e41b4c94191b04d…

MALICIOUS

RTF / .DOC

163.5 KB
MD5: adf076d883afeb5bed4f9bde491b4be3 SHA-1: 11ed41b233c6aea4b7bd355b4485a1787f5b040f SHA-256: 8e41b4c94191b04db8e0d240a7a76234c22cb075f8cddb1db5896d6e6246b5bc
141 Risk Score

Malware Insights

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

The RTF document contains OLE object data and triggers an objupdate event, indicating an attempt to exploit OLE object handling vulnerabilities. The high entropy of the extracted artifact suggests it may be a payload or exploit code. While no specific family is identified, the technique points towards a malicious document designed to execute code upon opening.

Heuristics 4

  • \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
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • 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_off00001bd6.bin
477459da6a8253ee6242c70b517408a7358091e42b3c49dbd21df7c00aa290ac
rtf-objdata-decoded RTF \objdata at offset 0x1BD6 64073 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.93, consistent with packed or encrypted content.