Malicious RTF — malware analysis report

Static analysis result for SHA-256 ebdfb279c4d9632b…

MALICIOUS

RTF

10.57 MB Created: 2024-07-03 11:34:00 First seen: 2026-06-11
MD5: 99613307e68bd8c276edc582ec2f6072 SHA-1: 918d521f54bc35c1a9b6991cf9d0abb760eec5d7 SHA-256: ebdfb279c4d9632b85c950695e52c5b0e8554fae0c46c07a0988c9428232abfa
282 Risk Score

Heuristics 8

  • Composite Moniker — CVE-2017-8570 (drops SCT script) critical CVE related CVE_2017_8570
    RTF \objdata decodes to OLE data containing the Composite Moniker — CVE-2017-8570 (drops SCT script) CLSID — the vulnerable control/moniker is embedded directly in the document's object stream, the delivery shape of this exploit. RTF objects auto-render when Word opens the file.
  • Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED
    RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
  • 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.
  • Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX
    RTF contains ~1048KB of hex-encoded data inside \objdata sections — may hide a payload
  • 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://schemas.microsoft.com/office/word/2003/wordml In RTF body
    • https://serveo365-my.sharepoint.com/personal/0faky_serveo_com/Documents/MIGUEL%20ANGEL%20GOVERMENT/ALMANSA%20U0S6X0001-LT0101/FACTURACI�N/HORAS%20MENSUALES%20BOLSAS.xlsxIn RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off001eacf7.bin rtf-objdata-decoded RTF \objdata at offset 0x1EACF7 4137 bytes
SHA-256: b116d9c67bcdcd367addadb1ef65088251c67ac60cef0229ad75fff81dd49685

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