MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1200 Hardware Add-in
T1204.002 Malicious File
The sample is an RTF document containing an embedded OLE object, specifically triggering heuristics related to the Equation Editor vulnerability (CVE-2017-11882). This indicates the document is designed to exploit this known flaw. The embedded object, objdata_00_off00001d3f.bin, is likely the payload delivery mechanism. No scripts were extracted, and the document body was unreadable, but the critical heuristics strongly suggest exploitation of CVE-2017-11882.
Heuristics 6
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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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OLE object data medium RTF_OBJDATARTF contains 1 \objdata section(s) — embedded OLE objects
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Embedded OLE object medium RTF_OBJEMBRTF contains \objemb — embedded OLE object
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Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00001d3f.binf8ba2c02cd8eee19370578d4af51983092298741cc6c722ff451b4b8334e08ea |
rtf-objdata-decoded | RTF \objdata at offset 0x1D3F | 64091 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact entropy is 7.93, consistent with packed or encrypted content.
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