Malicious RTF — malware analysis report

Static analysis result for SHA-256 d97fa743d1c6bd05…

MALICIOUS

RTF

49.3 KB Created: 2017-11-13 14:52:00 First seen: 2017-11-20
MD5: 793e4d70eff571d40635913ae9930930 SHA-1: e4e312252c8b850bac3103cbb807e7eff1f487fb SHA-256: d97fa743d1c6bd058a6495a215e812d4b471f0f4f25449f6c71ab7d1c0820717
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. The exploit targets the URL http://46.183.223.41/ex/12345678912345678912345678.hta, which likely serves a second-stage payload. The presence of the OLE object and the weaponized URL 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_off0000273f.bin rtf-objdata-decoded RTF \objdata at offset 0x273F 4784 bytes
SHA-256: 2cc49194e696a57b04b79ad82bf0a8d2cb0a290440fd8d7a306a5c5659baca86

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