MALICIOUS
222
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment
T1204.002 Malicious File: User Execution: Malicious File
The RTF file contains an embedded OLE object that is automatically linked and updated, triggering activation. Critical heuristics indicate the exploitation of CVE-2017-11882 via the Equation Editor. This suggests the file is designed to exploit this vulnerability to execute arbitrary code, likely leading to the download and execution of a second-stage payload.
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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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
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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_off000016ba.bina1daec4b7de48e2988f5dd8b239a49b54132f9d65bdaa3f1fa299807d885daee |
rtf-objdata-decoded | RTF \objdata at offset 0x16BA | 160332 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact entropy is 7.98, consistent with packed or encrypted content.
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