Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 8a9866eb09734b78…

MALICIOUS

RTF / .DOC

8.8 KB
MD5: d5b905bcc5ddef6a47156ad302f26e5f SHA-1: f2aec9d7a1f40368aa01191c0d20d64829c367b5 SHA-256: 8a9866eb09734b7810ed0d2970ed4be3ddbba324e6845b7ce1a43be5a3795912
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

The RTF document contains OLE object data and triggers an \objupdate event, indicating it's designed to activate embedded objects. This strongly suggests a malicious intent to exploit OLE functionality for payload delivery. Without a document body or script content, the exact nature of the payload remains unclear, but the technique points towards a downloader or exploit delivery mechanism.

Heuristics 2

  • \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 2 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00001233.bin
8e9b92340ba8809aa6fb2f5f9679620dd595d36ca50bb2a92ebfa7c74775910e
rtf-objdata-decoded RTF \objdata at offset 0x1233 1391 bytes