MALICIOUS
200
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
The RTF document contains embedded OLE object data and specifically targets the Equation Editor component, triggering heuristics for OLE object activation and a known vulnerability (CVE-2026-21514). This indicates the file is designed to exploit a security bypass in Equation Editor to achieve arbitrary code execution.
Heuristics 5
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CVE-2026-21514 — Word/OLE security bypass in RTF high CVE likely CVE_2026_21514RTF document contains an embedded OLE object with an Ole10Native stream. CVE-2026-21514 exploits OLE stream metadata validation in Word; the Ole10Native stream is used to deliver payloads and trigger the bypass when the document is opened.
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Equation Editor CLSID critical RTF_EQUATION_EDITOREquation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
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Automatically linked OLE object high RTF_OBJAUTLINKRTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
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\objupdate forces OLE activation high RTF_OBJUPDATERTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
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OLE object data medium RTF_OBJDATARTF contains 1 \objdata section(s) — embedded OLE objects
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off0000003e.binecfd4b2862bd0a1e47a808f902bf7602af09bcdf44de283fda37668712b9a625 |
rtf-objdata-decoded | RTF \objdata at offset 0x3E | 3640 bytes |
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