Malicious RTF — malware analysis report

Static analysis result for SHA-256 72c08794de6f783e…

MALICIOUS

RTF

99.6 KB Created: 2016-05-10 11:42:00 First seen: 2019-04-18
MD5: 56167622f0adf10c71ad1f0aa19ccf14 SHA-1: 51f55296909f417ec801f556f5d2a73a28fd348b SHA-256: 72c08794de6f783edcd3f962b877b925d47d545c819769f996c9ca01174babb6
242 Risk Score

Malware Insights

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

The RTF file contains OLE object data and triggers heuristics related to CVE-2017-8570, indicating it exploits a vulnerability to drop a script. The document body appears to be a benign pension payment statement, suggesting a social engineering lure. The presence of a composite moniker and auto-linked OLE object further supports the exploitation of CVE-2017-8570 for client execution.

Heuristics 7

  • 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.
  • 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/of In RTF body
    • http://nlb-ccsp-vivat.ca.sbrf.ru:9080/milpen/printEndXls.do?method=printIn RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000b6eb.bin rtf-objdata-decoded RTF \objdata at offset 0xB6EB 3625 bytes
SHA-256: 07e6812810bca9a1dbc83afdf8ecb007aeb676295bb134dbdc6a62b29cbdf52a

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