MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1204 Malicious Link
T1204.002 Malicious Link: Malicious File
T1059 Command and Scripting Interpreter
The RTF document contains multiple embedded OLE objects, with one specifically triggering activation via \objupdate. The critical heuristic firing indicates exploitation of CVE-2017-8759, a vulnerability in MSXML SAX OLE activation, which likely leads to the execution of a malicious payload. The presence of an embedded OLE object and the exploitation of a known vulnerability strongly suggest a malicious document designed for exploitation.
Heuristics 5
-
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.
-
\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.
-
OLE object data medium RTF_OBJDATARTF contains 3 \objdata section(s) — embedded OLE objects
-
Embedded OLE object medium RTF_OBJEMBRTF contains \objemb — embedded OLE object
-
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_off00003138.bin0e860ebab148d157004a1b56c393b66f58d74a2d3b74be23cf48cd5d39762807 |
rtf-objdata-decoded | RTF \objdata at offset 0x3138 | 127534 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.