Malicious RTF — malware analysis report

Static analysis result for SHA-256 8375b11cfa0d03ec…

MALICIOUS

RTF

39.4 KB Created: 2018-02-20 05:31:00 First seen: 2018-03-04
MD5: 1c32ee5ad87510aa2b9667de70e68930 SHA-1: 95f04892bd69b72b40dd7913f8646cfb4ded10ce SHA-256: 8375b11cfa0d03ec5453475dc79087d6cf042efe18d4313def51969f3065b3f8
202 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an OLE object that exploits CVE-2017-0199, a critical vulnerability allowing for remote code execution. The exploit is configured to download and execute a HTA file from the URL http://ddl2.data.hu/get/282857/11052077/tyuihthiyu.hta. This indicates the document's primary purpose is to act as a dropper for a secondary payload.

Heuristics 6

  • 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.
  • ClamAV: Rtf.Exploit.CVE_2017_0199-6335035-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Exploit.CVE_2017_0199-6335035-0
  • 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://ddl2.data.hu/get/282857/11052077/tyuihthiyu.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_off000027aa.bin rtf-objdata-decoded RTF \objdata at offset 0x27AA 4664 bytes
SHA-256: d0b3aff1e606a482585d6573e6a8100eafffe0dcb3604f4d96b1688f1b5c3bc4

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