MALICIOUS
129
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The file is an RTF document that contains an embedded OLE object, specifically triggering critical heuristics related to Equation Editor exploitation. The ".objupdate" directive indicates that the embedded object is designed to be activated automatically, likely leading to the execution of malicious code. The presence of the Equation Editor CLSID strongly suggests an attempt to leverage CVE-2017-11882 or a similar vulnerability for arbitrary 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_off000009b0.bin634a80a21740a67d4d2f60911f253602a266aa2998519bf863df4cdd3cad9ea6 |
rtf-objdata-decoded | RTF \objdata at offset 0x9B0 | 129085 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact entropy is 7.97, consistent with packed or encrypted content.
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