Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 22fda9c5d9b9a804…

MALICIOUS

RTF / .DOC

27.5 KB
MD5: 7a8e85f652427c8ab459fd231d7e9a9d SHA-1: 98bea7b9e320c44b2ced1f62d7dc0d580e5fc62e SHA-256: 22fda9c5d9b9a8047535e542f04a8377ce6f5b783c1eb907bfe5a2d106afa432
82 Risk Score

Malware Insights

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

The RTF file contains embedded OLE objects, with one object triggering an update that likely executes a malicious payload. The high-entropy carved artifact suggests a packed or obfuscated payload is being dropped. Without further analysis of the embedded object, the exact nature of the payload and its ultimate goal remain unclear.

Heuristics 4

  • \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
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • 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_off00000043.bin
8ac7377289f5fb7d5f83ef8b0edc0ffad89e3a2e5bc050b69bbf2d37435a4c5b
rtf-objdata-decoded RTF \objdata at offset 0x43 13961 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.98, consistent with packed or encrypted content.