MALICIOUS
300
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File
T1559.002 Component Object Model Hijacking
The RTF file contains multiple indicators of exploitation, including OLE object data, composite monikers, and excessive hex data, strongly suggesting the presence of a hidden payload. The critical ClamAV detection of 'Rtf.Exploit.CVE_2018_0802-6825822-0' confirms the exploitation of a known vulnerability in the Equation Editor. The file likely serves as a dropper for a secondary 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_2018_0802-6825822-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Rtf.Exploit.CVE_2018_0802-6825822-0
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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 ~1958KB 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_off000000b4.bin9a231533de93c778e1e113e316798dfb7ab4f383aa4651db7e24cd262cd0151f |
rtf-objdata-decoded | RTF \objdata at offset 0xB4 | 979553 bytes |
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