Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 273b21b626a0d62d…

MALICIOUS

RTF / .DOC

236.5 KB
MD5: 544a000ab682b25a4f51ae3c37777635 SHA-1: ce51ee042d0b307c7b66cf67b4ee82c741494193 SHA-256: 273b21b626a0d62db668a96bd8629fd6c337562af8d96ba54b4565e7317d392d
62 Risk Score

Malware Insights

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

The RTF document contains OLE object data and an \objupdate directive, indicating it is designed to exploit OLE object activation. This suggests a delivery mechanism that relies on the user opening the document and triggering the embedded object, likely to download and execute a secondary payload. No specific family could be identified.

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_off00000067.bin
9cef931a43ec57ec9074f6671f2b8f022b0bed38ebd991b20540274275c3f35a
rtf-objdata-decoded RTF \objdata at offset 0x67 120973 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.