Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 70535e402e399e27…

MALICIOUS

RTF / .DOC

26.5 KB First seen: 2026-02-12
MD5: e517cb57f7252934641076a6f74b9701 SHA-1: b3b77df778150e74769459d3bc1acf13ff6fd65d SHA-256: 70535e402e399e2743de32189aa712eeb0f8fdb4c2b8daafd01d5fbdaf438ad4
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The RTF document contains embedded OLE objects, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic firing suggests that these objects are designed to be automatically activated upon opening the document. This points to an attack pattern where the embedded object is likely a malicious executable or script designed to be run, potentially exploiting a client execution vulnerability. No document body or script content was available for further analysis.

Heuristics 3

  • Ole10Native stream in RTF OLE object high CVE related RTF_OLE10NATIVE_STREAM
    RTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
  • \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_off000015dc.bin
d959a7c98861987a02744bba84971714e15c099a7515468268d8e1599824d9e6
rtf-objdata-decoded RTF \objdata at offset 0x15DC 4685 bytes