Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 c021dec22b885321…

MALICIOUS

RTF / .DOC

105.4 KB
MD5: a58ea1c3bdeaf50305a870da9ed4a175 SHA-1: 4816bc95dc76050b185987682cc4936171a6b3b4 SHA-256: c021dec22b8853210ffbe271a8d7c959b57ce11dfae27ecd0b8c74b0621c8636
102 Risk Score

Malware Insights

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

The RTF file contains OLE object data and uses automatic linking and update mechanisms, indicating an attempt to exploit vulnerabilities for code execution. The presence of an embedded OLE object further supports this. While no specific document body content or scripts were extracted, the heuristics strongly suggest a malicious OLE object is embedded, likely leading to the download or execution of a secondary payload.

Heuristics 4

  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • \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_off00000046.bin
17916f969b25b2b50cde60a43ff34dd5e2bd53f8129b906d3e234f9c7979e322
rtf-objdata-decoded RTF \objdata at offset 0x46 53891 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.