Malicious RTF — malware analysis report

Static analysis result for SHA-256 1f1816e7d046ff36…

MALICIOUS

RTF

50.2 KB Created: 2017-10-09 17:42:00 First seen: 2017-10-28
MD5: b31da7e7936ee211ccb54e2fc5da3fc0 SHA-1: ce1c623050ea031a6634a480804ed2ec53180055 SHA-256: 1f1816e7d046ff3605ef6a3f9211d684acef7809b8ae95e0fa0482eaf6d3b8d8
202 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains an OLE object with embedded data that exploits CVE-2017-8759, a SOAP Moniker vulnerability. This vulnerability allows for remote code execution, likely to download and execute a second-stage payload. The presence of OLE object data and automatic linking further supports the exploitation of embedded objects within the RTF document.

Heuristics 6

  • SOAP Moniker — CVE-2017-8759 (SOAP WSDL RCE) critical CVE related CVE_2017_8759
    RTF \objdata decodes to OLE data containing the SOAP Moniker — CVE-2017-8759 (SOAP WSDL RCE) CLSID — the vulnerable control/moniker is embedded directly in the document's object stream, the delivery shape of this exploit. RTF objects auto-render when Word opens the file.
  • ClamAV: Rtf.Downloader.CVE_2017-6336326-3 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Downloader.CVE_2017-6336326-3
  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • OlePres presentation stream in RTF OLE object medium RTF_OLEPRES_STREAM
    RTF 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.
  • 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_off00002aa9.bin rtf-objdata-decoded RTF \objdata at offset 0x2AA9 4784 bytes
SHA-256: e08f49a5569b9d3355910c3c76c5a1d2c5137a0b8d8f04edb11c6297d45d201b

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