Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 dfe8a7af99af2b54…

MALICIOUS

RTF / .DOC

1.48 MB First seen: 2025-10-20
MD5: 0601e3af198e9e2af6e3f14c409f8f49 SHA-1: ec52f873b327dc113b4c8506c538f9ff3e5c0fa2 SHA-256: dfe8a7af99af2b546705e41a7509a5ae00454be70645cf50ebf076dc72a2a3bd
100 Risk Score

Malware Insights

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

The file is an RTF document containing OLE object data, which is a common technique for embedding malicious content. The document body includes a lure instructing the user to 'Enable editing', indicating an attempt to bypass security measures. The presence of OLE objects and the lure strongly suggest the document is designed to execute a secondary payload upon user interaction.

Heuristics 4

  • \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
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • 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_off001590c9.bin
2d9d050c3bc73e94e5e8c50099bb23432374d03cc3b00b99195f79e0af8ab70f
rtf-objdata-decoded RTF \objdata at offset 0x1590C9 1790 bytes