Malicious RTF — malware analysis report

Static analysis result for SHA-256 5e27046997513545…

MALICIOUS

RTF

508.5 KB
MD5: 6dbfa38bfdaad531a7ab71b602007b78 SHA-1: 125c6b45d1378370781051f1a8e54f3358345350 SHA-256: 5e27046997513545f28ea1ccc1e3d2023ce85ec7d123facd3692a6500d218f81
102 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object with OLE10Native stream data, which is a common technique for delivering exploits. The ".bin" file extracted from the OLE object is highly suspicious and likely contains shellcode or a secondary payload. The presence of OLE object data and the forced activation via \objupdate strongly suggest an attempt to execute code upon opening the document.

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 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_off00000f51.bin
c5db7b134780378a5111a86d40861746026bffc019b5adf8a5ede7abd0b3395d
rtf-objdata-decoded RTF \objdata at offset 0xF51 129072 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.97, consistent with packed or encrypted content.