Malicious RTF — malware analysis report

Static analysis result for SHA-256 29ab089f42852035…

MALICIOUS

RTF

49.8 KB Created: 2017-08-03 14:43:00 First seen: 2017-08-08
MD5: e36af2c0b0d702314fbf04705aadc8b8 SHA-1: 775113400e8b1dbb831aade0e8f557a61f82b689 SHA-256: 29ab089f428520356fa022648e255f30793f25f2de7ab66100a3f0e1412c674b
202 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains an OLE object that exploits CVE-2017-0199, a critical vulnerability allowing for remote code execution. The exploit embeds a URL pointing to a HTA file, which is likely a second-stage payload. The presence of the weaponized URL and the OLE object strongly indicate a malicious intent to compromise the user's system.

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 https://a.pomf.cat/nyxeve.hta In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002ac4.bin rtf-objdata-decoded RTF \objdata at offset 0x2AC4 5776 bytes
SHA-256: 5df8ba390da3a9252a0fd4656771596394d78b9a117eac37707920ca65e230ec

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