Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 fe3c3ca01a641b50…

MALICIOUS

RTF / .DOC

572.4 KB
MD5: 682668e985aef59c17b5c5c07c864feb SHA-1: ccd64c7b6107cdc140d1e9a7e6b2f1f91d21b18f SHA-256: fe3c3ca01a641b5092522c38d228e0e483e4d2bd5aac26c09798ebbcb3b3dbfb
166 Risk Score

Malware Insights

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

The RTF document contains embedded OLE objects, indicated by RTF_OBJDATA and RTF_OLE10NATIVE_STREAM heuristics. The RTF_OBJUPDATE heuristic suggests that these objects are designed to be automatically activated upon opening the document, likely leading to the execution of a malicious payload. The high entropy of the extracted artifact further supports the presence of obfuscated or packed malicious code. No document body or script content was available for further analysis.

Heuristics 4

  • 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.
  • \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_off0000124f.bin
87117eb1054c568244dae6b58330221dc4e8f26d27fd53ed31cb761262851e47
rtf-objdata-decoded RTF \objdata at offset 0x124F 145471 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.98, consistent with packed or encrypted content.