Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 ef1ce544a008966a…

MALICIOUS

RTF / .DOC

15.7 KB
MD5: b4daa86e8ccce47aa17112044524b739 SHA-1: 51a43c905928f2fcbb77c1acbb840d97b2805853 SHA-256: ef1ce544a008966a834d36b9f01cb2a7989c7cf522a4a58c349e2300e1ba028d
60 Risk Score

Malware Insights

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

The RTF document contains embedded OLE objects, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that these objects are designed to be activated, likely to execute embedded code or launch a secondary payload. The document body is heavily obfuscated and does not provide clear textual clues about its intent. Without further script analysis or clear document content, the exact payload and delivery mechanism remain uncertain, but the OLE object activation is a strong indicator of malicious intent.

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_off00001296.bin
86880acb005d032a41e2582e91afe02c17ba3f30d956780230333f39691a0f66
rtf-objdata-decoded RTF \objdata at offset 0x1296 1444 bytes