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
The RTF document contains embedded OLE objects, with a critical heuristic firing for CVE-2017-8759, indicating exploitation via MSXML SAX OLE activation. The presence of ".objdata" and ".objupdate" sections further supports the exploitation of embedded objects. The single extracted URL, while seemingly benign, is associated with the embedded object's metadata.
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 2 \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_off0000314f.bin09322c795ed0ec131ef375237219d6e17454920f0e654d92fd2e68f668c0e32a |
rtf-objdata-decoded | RTF \objdata at offset 0x314F | 121902 bytes |
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