Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 d9d006feda4bbf3e…

MALICIOUS

RTF / .DOC

501.0 KB
MD5: 2be597cb772ed4ee554d0b3112d750d5 SHA-1: ad1c69a72923dcbd1c8d8bbe3d1b9d30df0310b9 SHA-256: d9d006feda4bbf3e49e4b7cbc7e585a6cf9303f929b8c76f44a07b2927adc2ce
184 Risk Score

Malware Insights

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

The RTF document contains OLE object data and an automatically linked OLE object that forces activation via \objupdate. This suggests the document is designed to exploit OLE vulnerabilities to execute embedded content. A suspicious artifact, objdata_00_off00000a18.bin, was extracted, indicating a potential dropper or exploit.

Heuristics 5

  • Ole10Native stream in RTF OLE object high CVE related RTF_OLE10NATIVE_STREAM
    RTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
  • 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 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_off00000a18.bin
8213dbe9a31afa3ca949340a35ca63261bea58b33dddaf87cdd638700e5fe4f7
rtf-objdata-decoded RTF \objdata at offset 0xA18 145975 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.97, consistent with packed or encrypted content.