MALICIOUS
300
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File
T1559.001 Component Object Model Hijacking
The RTF file contains multiple indicators of exploitation targeting the Equation Editor vulnerability (CVE-2017-11882). Heuristics indicate the presence of OLE object data, composite monikers, and excessive hex data, all associated with this exploit. ClamAV explicitly identifies the file as Rtf.Exploit.CVE_2017_11882-6584355-1, confirming the exploit's nature. The embedded OLE object likely contains and executes the malicious payload.
Heuristics 7
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Composite Moniker in RTF OLE object high RTF_COMPOSITE_MONIKER_RELATEDRTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
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Ole10Native stream in RTF OLE object high RTF_OLE10NATIVE_STREAMRTF 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.
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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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ClamAV: Rtf.Exploit.CVE_2017_11882-6584355-1 critical CLAMAV_DETECTIONClamAV detected this file as malware: Rtf.Exploit.CVE_2017_11882-6584355-1
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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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Large hex data blocks in OLE object high RTF_EXCESSIVE_HEXRTF contains ~1920KB of hex-encoded data inside \objdata sections — may hide a payload
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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_off000000c0.bin0407b347df927c7855bf117ace29672a14915fdd973da93d3eff3ea594478469 |
rtf-objdata-decoded | RTF \objdata at offset 0xC0 | 962117 bytes |
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