Malicious RTF — malware analysis report

Static analysis result for SHA-256 c61dd002c07f0a64…

MALICIOUS

RTF

258.8 KB Created: 2017-04-14 09:45:00 First seen: 2017-12-09
MD5: f329b1e8fbee249cc7d2784699701f97 SHA-1: 6e0cb5091572b25c39dd4a8a8be08c60d87321ee SHA-256: c61dd002c07f0a648c6875d22c256a1ae39eea2882aa5bf63a562bc5d5d4764f
142 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an OLE object with an automatically linked URL, exploiting CVE-2017-0199. This exploit is designed to download and execute a payload from the specified URL, which is a common technique for initial compromise. The embedded URL http://103.85.186.15/load.hta is highly suspicious and likely serves as the second-stage payload.

Heuristics 5

  • CVE-2017-0199 (OLE2Link / weaponized URL) critical CVE exact CVE_2017_0199_WEAPONIZED_URL
    RTF contains a URL Moniker OLE link to a script/HTA/template-style remote loader, matching the tighter static CVE-2017-0199 shape.
  • 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://103.85.186.15/load.hta In RTF body
    • http://schemas.microsoft.com/office/word/2003/wordmlIn RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00003cde.bin rtf-objdata-decoded RTF \objdata at offset 0x3CDE 4432 bytes
SHA-256: 09268c3f83b7441c9768b9f04c6d3ec9e5875ea17dbfc4b9f9109d833e055908

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