Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 d896b15ec871e50e…

MALICIOUS

RTF / .DOC

216.4 KB
MD5: e087bd3653a90e582fa6a5028642379c SHA-1: 3f0856df35ca5eb47d2d4f581dfda6059c0377d6 SHA-256: d896b15ec871e50e0a83055147eb4f0fb993cf02e2758d6bd03c38e1fb2faea4
62 Risk Score

Malware Insights

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

The RTF document contains OLE object data and an \objupdate directive, indicating an attempt to exploit OLE activation for code execution. A suspicious artifact, objdata_00_off00000044.bin, was extracted, further supporting this attack vector. The specific payload or ultimate goal could not be determined due to the lack of script content or further analysis of the embedded object.

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_off00000044.bin
59d5769a779ec2491787f846c36a094f5bed4862aa2c3c0005f7ff589fa24455
rtf-objdata-decoded RTF \objdata at offset 0x44 110728 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.