MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1204 Malicious Link
T1204.001 Malicious Link: Malicious Link
T1566 Phishing
T1566.001 Phishing: Spearphishing Attachment
T1059 Command and Scripting Interpreter
T1059.001 Command and Scripting Interpreter: PowerShell
The RTF document contains embedded OLE objects, with a critical heuristic indicating exploitation of CVE-2017-8759 via MSXML SAX OLE activation. This suggests the file is designed to exploit a vulnerability to gain initial execution. The presence of an embedded OLE object and the specific CVE targeted point towards a malicious document designed for exploitation.
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 3 \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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OlePres presentation stream in RTF OLE object medium RTF_OLEPRES_STREAMRTF contains an embedded OLE object with an OlePres presentation stream. OlePres is an OLE presentation marker and is not enough on its own to identify CVE-2025-21298.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00003134.binc36e8b3fea313a6921a61b8a9de0bd12681691355327ff1230a13a919534f15d |
rtf-objdata-decoded | RTF \objdata at offset 0x3134 | 127534 bytes |
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