Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 070476bb2c0868ab…

MALICIOUS

RTF / .DOC

517.6 KB
MD5: 590ce086c9cd16d535d808543c5c76a0 SHA-1: 892343a1223bc602f3e0e4b71eeac2ebdfb8a7bd SHA-256: 070476bb2c0868aba1da672ffdc08ac1dc35f15b654d769963b0950642233c06
62 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF document contains OLE object data and triggers an \objupdate event, indicating an attempt to exploit a vulnerability related to OLE object activation for code execution. The presence of an embedded OLE object, objdata_00_off00000d33.bin, further supports this. The document's content is heavily obfuscated and appears to be a lure, likely delivered via spearphishing.

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 2 \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_off00000d33.bin
5363c31298d0d82933b17d85fd94a186f2b60dc8e6d231e5f9e3851dc3fe4476
rtf-objdata-decoded RTF \objdata at offset 0xD33 175675 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.98, consistent with packed or encrypted content.