Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 a6a40b0c4a6c4d57…

MALICIOUS

RTF / .DOC

842.9 KB
MD5: 97ed6e428353840fae178d796077bce5 SHA-1: 7df25f38d1e559123097abea8d7663a26ea86c1e SHA-256: a6a40b0c4a6c4d5777e2ec91950986fdef0cf9b15d5cbedd81bf0c5c82842d1f
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 configured to activate automatically upon opening the document. This points to a likely exploit attempt, where the embedded object is designed to execute malicious code. The extracted artifact 'objdata_00_off0000006e.bin' is the payload of this exploit.

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_off0000006e.bin
312b2ddb21a5fb250c60fc8692e7440aba1e5ec804a1da542abd58533b4b84e7
rtf-objdata-decoded RTF \objdata at offset 0x6E 431426 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.