Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 cbf6011dd13fb0a1…

MALICIOUS

RTF / .DOC

574.3 KB
MD5: e58320b2ddea08f7eb233faaf4d2f0b2 SHA-1: 570f84470cda58d38e52621ab0528a1393b70894 SHA-256: cbf6011dd13fb0a1d38fe74c36274da4664290a58bd9ae49cbd32c21708cc656
62 Risk Score

Malware Insights

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

The RTF document contains embedded OLE object data, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that these embedded objects are designed to be automatically activated upon opening the document, likely leading to the execution of malicious code. The extracted artifact 'objdata_00_off000000bc.bin' is the payload of this exploit.

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_off000000bc.bin
d37885a5d906ac44d08b8e1b7c67f63b2022136b92ec5e42e05dddd64c940c9d
rtf-objdata-decoded RTF \objdata at offset 0xBC 293767 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.