Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 d7278dd12e9b1509…

MALICIOUS

RTF / .DOC

339.2 KB
MD5: e1eb3a3e5d98818d2b875ac9ef7019ef SHA-1: 579ced40acb6a928cad38571e3977afc309b69a7 SHA-256: d7278dd12e9b1509a3e041aef2b8a1e13e515317ee3e8e75ff8aaa4dd5c5a6d5
102 Risk Score

Malware Insights

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

The RTF document contains OLE object data and is configured to automatically update and activate these objects, indicating an attempt to exploit OLE vulnerabilities. The presence of an embedded OLE object, identified as 'objdata_00_off0000114a.bin', strongly suggests that the document is designed to trigger malicious behavior upon opening. The heuristics indicate a high likelihood of exploitation, but the exact payload and delivery mechanism beyond the OLE object are not clearly defined.

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_off0000114a.bin
a4871fab9544a8d9ea33b21d73a43b2e73330a12761dd4b1c08225f40ab46bef
rtf-objdata-decoded RTF \objdata at offset 0x114A 171362 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.