Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 2d62f999d1ee6599…

MALICIOUS

RTF / .DOC

572.5 KB
MD5: 1607a59b22f8628b8356f7c439cde5e2 SHA-1: c9cf528fe6594a838b26af4be36d849c6836674d SHA-256: 2d62f999d1ee659961f0e661a0c2811c922d7d587a6d690e02619fbe8ddea0ec
141 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains embedded OLE objects, with evidence of OLE object data and activation triggers. This strongly suggests the file is designed to exploit OLE vulnerabilities to execute embedded code. The heuristics indicate that the embedded object is likely a secondary payload. Without further script analysis or network indicators, the exact family remains unknown, but the attack pattern is consistent with a downloader or initial access mechanism.

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_off000014c0.bin
baa37f53122e20f0bd18a1bf75569752d3808500d020404ad4d8ebc33a01deba
rtf-objdata-decoded RTF \objdata at offset 0x14C0 129073 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.97, consistent with packed or encrypted content.