Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 7c5ee4e9bfbb0066…

MALICIOUS

RTF / .DOC

257.1 KB
MD5: fccde19eac0bda663347f0b3e5118a8d SHA-1: 9599a1fe356af9d05f12d2918096af32ed374b5d SHA-256: 7c5ee4e9bfbb0066c939c5580dc79a756582c99134dec4c08ced456b4a741d5b
129 Risk Score

Malware Insights

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

The RTF document contains an OLE object with ".objupdate" which forces activation, indicating an attempt to exploit a vulnerability. The presence of an embedded OLE object and the RTF object data heuristic strongly suggest that this file is designed to drop and execute a malicious payload. No document body text was available for further analysis, and no scripts were extracted.

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_off00001b66.bin
290636a14510343385a9c84769ae546e22439981985d1d726a0f2cf0b52e22a0
rtf-objdata-decoded RTF \objdata at offset 0x1B66 64075 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.93, consistent with packed or encrypted content.