Malicious RTF — malware analysis report

Static analysis result for SHA-256 97cb19e6a4b7f263…

MALICIOUS

RTF

43.4 KB Created: 2017-11-13 02:51:00 First seen: 2017-11-20
MD5: 42d462179c4e1fb22f712bafa5aa87a9 SHA-1: b7f719ab0e4a9cc24843917bc78d03edd9c600b7 SHA-256: 97cb19e6a4b7f263ecea86d8b8158017fb6c59b110b1d4222955aac2f15a5c5a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an OLE object that exploits CVE-2017-0199, a known vulnerability for client execution. This exploit is configured to download a HTA file from the URL http://46.183.223.41/ex/12345678912345678912345678.hta, which likely serves as a second-stage payload. The presence of the weaponized URL and the specific CVE exploit strongly indicate a malicious intent to execute arbitrary code.

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://46.183.223.41/ex/12345678912345678912345678.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_off000027b1.bin rtf-objdata-decoded RTF \objdata at offset 0x27B1 4664 bytes
SHA-256: 6e3529f4a72b1599a734cea6f2fe49455ddb5c9f75af6328295f9833a65d81e6

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