MALICIOUS
182
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1566.001 Spearphishing Attachment
The RTF file contains embedded OLE object data and specifically triggers heuristics related to Equation Editor and ".objupdate" which forces OLE activation. ClamAV detection confirms this is Rtf.Exploit.CVE_2017_11882-6584355-1, indicating exploitation of a known vulnerability in Equation Editor for client execution. The presence of a benign URL and repetitive text in the document body does not detract from the exploit's primary function.
Heuristics 5
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Equation Editor CLSID critical CVE likely 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
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://schemas.microsoft.com/office/word/2003/wordml In RTF body
- http://bit.ly/2R6II39In RTF body
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off000005e8.bin |
rtf-objdata-decoded | RTF \objdata at offset 0x5E8 | 3618 bytes |
SHA-256: a3d108626aee46b160722a46a815ff4cc2a0effcaec6aa0c560ca324bdc86d48 |
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