MALICIOUS
129
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File Execution: Malicious File
T1566.001 Phishing: Spearphishing Attachment
The RTF document contains an embedded OLE object that leverages the Equation Editor vulnerability (RTF_EQUATION_EDITOR). The ".objupdate" directive suggests that the embedded object is designed to be activated automatically, triggering the exploit. The extracted artifact "objdata_00_off00000749.bin" is likely the payload or a component thereof. The attack pattern is consistent with a spearphishing attachment designed to exploit this vulnerability for initial code execution.
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_off00000749.bin1225cf41c852271c02e45d8cbfe0b20964eb2a0ccd1e79b25260951b501af916 |
rtf-objdata-decoded | RTF \objdata at offset 0x749 | 64565 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact entropy is 7.92, consistent with packed or encrypted content.
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