MALICIOUS
121
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The RTF document contains embedded OLE object data, specifically targeting the Equation Editor component. The critical RTF_EQUATION_EDITOR heuristic indicates a likely exploit of a known vulnerability within this component. The RTF_OBJUPDATE heuristic further suggests that the embedded object is designed to be activated, leading to arbitrary code execution. The document body is obfuscated and does not provide direct clues to the payload's intent, but the exploit mechanism is clear.
Heuristics 3
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Split hex Equation Editor ProgID + OLE object critical RTF_EQUATION_EDITORRTF embeds the Equation.3 ProgID as hex bytes near OLE object activation and splits the byte stream with whitespace or an ignorable RTF group. This is an Equation Editor OLE activation surface commonly used by CVE-2017-11882 / CVE-2018-0802 exploit documents.
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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 2 \objdata section(s) — embedded OLE objects
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off000000a5.bin2972854b41ed9f0b0406a956af5b91691e03efb3f4c8710bf02b0f43eebf0e3c |
rtf-objdata-decoded | RTF \objdata at offset 0xA5 | 2268 bytes |
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