MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
T1059.001 PowerShell
The RTF file contains embedded OLE objects and triggers OLE activation via \objupdate, indicating an attempt to execute embedded content. The critical heuristic firing for CVE-2017-8759 strongly suggests exploitation of this vulnerability for initial execution. The presence of OLE object data further supports the attack pattern of leveraging embedded objects for malicious purposes. The file is likely a downloader or dropper.
Heuristics 5
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CVE-2017-8759 — MSXML SAX OLE activation critical CVE likely CVE_2017_8759RTF contains a hex-encoded OLE1 object for Msxml2.SAXXMLReader.6.0 followed by an embedded OLE compound document, and the document requests OLE activation. This matches the RTF staging shape used for CVE-2017-8759 SOAP/WSDL parser code injection.
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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 OLE object medium RTF_OBJEMBRTF contains \objemb — embedded OLE object
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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
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off0008c467.binb0bc2a54fc9098c45b51e8250a90b1937b6abc5f80be70acfc9bd96ca10abc6f |
rtf-objdata-decoded | RTF \objdata at offset 0x8C467 | 1485 bytes |
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