Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 c11f3a09ff8fc94e…

MALICIOUS

RTF / .DOC

788.6 KB
MD5: 14aaf549db3f6c0f581deefe8697e0fe SHA-1: 0f6432a57caa7dc45f30779189a0dee98e56fcfe SHA-256: c11f3a09ff8fc94e0e481963f4ca38e9d817c39cf6100e6ac75899c27660e475
62 Risk Score

Malware Insights

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

The RTF document contains embedded OLE object data, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that this embedded object is designed to be activated automatically upon opening the document. This mechanism is commonly used to download and execute a second-stage payload. No specific family could be identified, and no further script content was available for analysis.

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_off00000043.bin
5422356ae4bb382680cff4c159160e534551aba8013dd7958c48f8d61883a829
rtf-objdata-decoded RTF \objdata at offset 0x43 403614 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 8.00, consistent with packed or encrypted content.