Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 91d147188507d9fc…

MALICIOUS

RTF / .DOC

143.3 KB
MD5: 94a3b721c0f09451abe525abe8cf5c32 SHA-1: 02a2a6cd047583c37cfc4b6d3d427bda0b6c5282 SHA-256: 91d147188507d9fcbb6ce298b06c5a7f130dcfe7f2ea4c80da6abb04009ec421
60 Risk Score

Malware Insights

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

The RTF document contains embedded OLE object data, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that this object is automatically activated upon opening the document. This mechanism is commonly used to exploit vulnerabilities or to execute embedded code, likely for downloading and executing a second-stage payload. No specific family could be identified, and no scripts were extracted.

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 1 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000714.bin
2d3bb357ba59862c2430427a9bb9ba8227afdf97389311d1175896bf99f9559c
rtf-objdata-decoded RTF \objdata at offset 0x714 4156 bytes