Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 29ea36231cf81b25…

MALICIOUS

RTF / .DOC

1.61 MB
MD5: 6fee36f5bb661955ddc418400f2cad60 SHA-1: fbf259c193e3f0289c4f95e25c8bf2ab4e7e07e7 SHA-256: 29ea36231cf81b25b72c02be90c10422145101252fac8d43163a57731dffa2b2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The RTF file contains a large amount of hex-encoded data within an OLE object, indicated by RTF_EXCESSIVE_HEX and RTF_OBJDATA heuristics. The RTF_OBJUPDATE heuristic suggests that this embedded object is designed to be activated, likely to execute a hidden payload. No document body or scripts were extracted, but the structure strongly suggests a malicious OLE object delivery.

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.
  • Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX
    RTF contains ~1687KB of hex-encoded data inside \objdata sections — may hide a payload
  • 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_off000000e7.bin
cd337676f128bf17c4da5ca0d886e0715c4787b7a20e0a3d4cb7a5e822219c47
rtf-objdata-decoded RTF \objdata at offset 0xE7 843799 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.