Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 0afff6f8e9f46c3b…

MALICIOUS

RTF / .DOC

878.8 KB
MD5: cb3af2d8ca17af3ac5f9522f114236a3 SHA-1: b113356582cf12ea715873bcdbeddc2e0e4fe96b SHA-256: 0afff6f8e9f46c3b8306e86b4fc5f6951d6cb6fc7a3d0021ac4bbb0479af3efd
80 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1137.001 Office Application Build

The RTF document contains embedded OLE objects and uses an ".objupdate" directive, indicating an attempt to automatically activate and execute these embedded objects upon opening. The document body includes a lure instructing the user to 'Enable editing', a common tactic to bypass macro security and allow malicious content to run. The presence of OLE objects and the lure strongly suggest an attack pattern aimed at exploiting user interaction to execute embedded malicious content.

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
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0001e496.bin
175ca3156ff8d1ab030cd2de99b3e421c7e628445f85f7128e617ffe6e94262b
rtf-objdata-decoded RTF \objdata at offset 0x1E496 4227 bytes