Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 8384a7cc8f4ee176…

MALICIOUS

RTF / .DOC

3.83 MB Authoring application: Msftedit 5.41.15.1515
MD5: 8ed4a39e413fa3c9bc2f051c9306ebb7 SHA-1: e595c41b8bbbdc41b3569a19543f991712a37913 SHA-256: 8384a7cc8f4ee1769a40eafbe236a231074f855e039e70f2d53d8a7d6b17e28e
182 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking T1129 Execution through API

The RTF file contains multiple indicators of maliciousness, including embedded OLE objects and large hex-encoded data blocks within the \objdata sections. A PE header was detected within this hex data, strongly suggesting the presence of an embedded executable payload. The extracted artifact 'objdata_00_off000000d3.bin' is likely this payload.

Heuristics 6

  • PE header (with DOS stub) in hex data critical RTF_MZ_HEX
    Hex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
  • Package object class high RTF_OBJCLASS_PACKAGE
    OLE Package object — can wrap arbitrary files
  • Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX
    RTF contains ~3906KB 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
  • 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_off000000d3.bin
2e55829a2f03673580b1b286d6e69603c92cf9feaca0a463fb049526e06d95d2
rtf-objdata-decoded RTF \objdata at offset 0xD3 1904233 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.89, consistent with packed or encrypted content.