Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 3d0540313f044da5…

MALICIOUS

RTF / .DOC

79.2 KB Authoring application: Msftedit 5.41.15.1515
MD5: 105e81e953b9688f6166a5db661e0c95 SHA-1: f6f18cb8b5684732484311c858efb7bb5aa60228 SHA-256: 3d0540313f044da5d8457912b0b5c18d7a6c8e90dfbd45aa83c223915e635ec6
140 Risk Score

Malware Insights

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

The RTF document contains an embedded OLE object, identified by RTF_OBJDATA, RTF_OBJEMB, and RTF_OBJCLASS_PACKAGE heuristics. Crucially, a PE header (RTF_MZ_HEX) was detected within the object data, indicating it is likely a Windows executable. This suggests the file is designed to deliver a malicious payload via an embedded object, a common tactic for initial access.

Heuristics 4

  • PE header (with DOS stub) in hex data critical RTF_MZ_HEX
    Hex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
  • Package object class high RTF_OBJCLASS_PACKAGE
    OLE Package object — can wrap arbitrary files
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000000ce.bin
b20affe88745a982c54c191b173bb4f71725089bf9c8d0dda27495941f7685c1
rtf-objdata-decoded RTF \objdata at offset 0xCE 36160 bytes