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). This indicates the document is designed to exploit this known flaw for code execution. The presence of OLE object data suggests it's likely a downloader for a second-stage payload, although no specific URLs or scripts were extracted to confirm this. The confidence is high due to the clear exploitation vector.
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_off00001bcc.bin1f3b6bd697b371ad90bff91cc94895d3deae2f58da26f005876862d3fbd544d0 |
rtf-objdata-decoded | RTF \objdata at offset 0x1BCC | 64064 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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