Malicious RTF — malware analysis report

Static analysis result for SHA-256 108dc21b430ceb7c…

MALICIOUS

RTF

55.2 KB Created: 2021-10-07 02:54:00 First seen: 2021-10-12
MD5: 9cfd3bcc016677cbcbe695182fcf8507 SHA-1: 5ef701ea3777f5587194a6680c6d8af464c02ecd SHA-256: 108dc21b430ceb7ca3f6a48442bd03ea2a029cc50480235462840960b5b809ee
102 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object and triggers the critical heuristic CVE_2017_8759, indicating exploitation of MSXML SAX OLE activation. This vulnerability is commonly used to download and execute arbitrary code, suggesting the file's purpose is to compromise the user's system. No document body or script content was available for further analysis.

Heuristics 4

  • CVE-2017-8759 — MSXML SAX OLE activation critical CVE likely CVE_2017_8759
    RTF 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.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • Embedded URL info EMBEDDED_URL
    One 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00004dea.bin rtf-objdata-decoded RTF \objdata at offset 0x4DEA 2519 bytes
SHA-256: cdc8091b4d1d7460e6205ddabe0ccaeaf05d2c0eaff8f39a4c894d8b3b8f632d

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