MALICIOUS
129
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
T1059.003 Windows Command Shell
The sample is an RTF document containing OLE object data and specifically triggers heuristics for the Equation Editor vulnerability (CVE-2017-11882). The ".bin" file extracted via objdata is highly suspicious and likely contains the exploit code. The presence of the Equation Editor CLSID and the ".bin" artifact strongly suggests this document is designed to exploit this known vulnerability to achieve arbitrary code execution, likely for a secondary payload download.
Heuristics 4
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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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\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_off0000131a.bin413fa22445e27c4689dc5d828612d3c04d1fdbe095f9db07fc4f77598b9e08f9 |
rtf-objdata-decoded | RTF \objdata at offset 0x131A | 104001 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact entropy is 7.96, consistent with packed or encrypted content.
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