Malicious RTF — malware analysis report

Static analysis result for SHA-256 f09df30e3564787b…

MALICIOUS

RTF

2.72 MB Created: 2017-09-29 20:01:00 First seen: 2017-10-10
MD5: 099d144ee2de1b7631ab7efbb900ca57 SHA-1: ee738082dbdc4b6d3f55f929e96b48b3456a95bf SHA-256: f09df30e3564787b80d43740b0c930e135ab6b7a539452a0fc4ee9043318fc45
302 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains embedded OLE objects and triggers critical heuristics for CVE-2017-0199 and CVE-2017-8759, indicating exploitation of vulnerabilities for remote code execution. The embedded URL http://vireoseeds.biz/t.php?thread=thread1&t=h is likely used to download and execute a secondary payload, as suggested by the 'Downloader' detection in ClamAV.

Heuristics 8

  • 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.
  • CVE-2017-0199 (OLE2Link / remote URL Moniker) critical CVE likely CVE_2017_0199
    RTF contains a URL Moniker OLE link whose decoded target is remote. Office can fetch and process the response through the CVE-2017-0199 OLE2Link attack path, but the server-side content type is not proven statically.
  • 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.
  • Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX
    RTF contains ~2811KB of hex-encoded data inside \objdata sections — may hide a payload
  • OLE object data medium RTF_OBJDATA
    RTF contains 2 \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://vireoseeds.biz/t.php?stats=send&thread=thread1 In RTF body
    • http://vireoseeds.biz/t.php?thread=thread1&t=hIn RTF body
    • http://schemas.microsoft.com/office/word/2003/wordmlIn RTF body

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002a95.bin rtf-objdata-decoded RTF \objdata at offset 0x2A95 5040 bytes
SHA-256: 915951d6fd269e82a5cad0f18d0f86da473c03cf419e2d05c7d0107a4b207577
objdata_01_off000054e9.bin rtf-objdata-decoded RTF \objdata at offset 0x54E9 4210 bytes
SHA-256: 518c012c9e6450b84888b2c50f061a0cdf5a37b01084b8a6f05ed685528a0871

Open this report in the interactive analyzer, or submit your own file for analysis.