MALICIOUS
180
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File Execution: Malicious File
T1566.001 Phishing: Spearphishing Attachment
The file is an RTF document that contains an embedded OLE object, specifically targeting the Equation Editor vulnerability (CVE-2017-11882). The presence of \objdata and \objupdate heuristics, along with the ClamAV detection for Rtf.Exploit.CVE_2017_11882, strongly indicates exploitation of this known flaw. The document body is heavily obfuscated and unreadable, suggesting it's designed to trigger the exploit rather than convey information. No scripts or further IOCs were extracted, but the exploit itself is the primary attack 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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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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\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
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off000016c0.binaf7070965ffd768bfd157ade6c41056393fcc58038ed03e112b5b7eee8c16323 |
rtf-objdata-decoded | RTF \objdata at offset 0x16C0 | 3664 bytes |
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