Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 77ff0fe733a29458…

MALICIOUS

RTF / .DOC

566.3 KB
MD5: 62a7b3f94fccff2290554183030a7295 SHA-1: 2ecc1fcffe96a21bfdc33a30a1f79195f96b3cf8 SHA-256: 77ff0fe733a29458872bac397a3f6bf6a6abf878edcd7cdd21b4b7fc396ec56e
129 Risk Score

Malware Insights

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

The RTF file contains embedded OLE object data that is configured to auto-activate. This suggests an attempt to exploit vulnerabilities or trick the user into executing embedded code. The presence of `RTF_OBJDATA` and `RTF_OBJUPDATE` heuristics strongly indicates a malicious intent to leverage OLE object activation for payload delivery or execution. No document body text or scripts were available for further analysis, limiting the ability to determine the exact nature of the payload.

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_off00000543.bin
2231310d169f72f37765991af272d7dd05925cc08b69dc3fc58bcd23d9256030
rtf-objdata-decoded RTF \objdata at offset 0x543 128563 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.98, consistent with packed or encrypted content.