Malicious RTF — malware analysis report

Static analysis result for SHA-256 3df9db6c70487c9d…

MALICIOUS

RTF

43.5 KB Created: 2017-08-14 14:24:00 First seen: 2017-08-27
MD5: dcd0042c0b887287ed557a6a23caaedd SHA-1: 2d6c2fb5324f7cc48e8170c1237dc2abf813a1ef SHA-256: 3df9db6c70487c9dd6d0b321a7f1aa6d1d39fc2165387d0a40973b1e9b17cc03
202 Risk Score

Malware Insights

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

The RTF file contains critical heuristics indicating exploitation of CVE-2017-0199, which is a known vulnerability for remote code execution. The exploit targets a remote URL to download and execute a secondary payload. No document body was available for analysis, but the presence of the OLE object data and the specific CVE exploit strongly suggest a malicious intent to compromise the user's system.

Heuristics 6

  • CVE-2017-0199 (OLE2Link / remote URL Moniker) critical CVE likely CVE_2017_0199
    RTF contains a URL Moniker OLE link whose decoded target is remote. Office can fetch and process the response through the CVE-2017-0199 OLE2Link attack path, but the server-side content type is not proven statically.
  • 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/office/word/2003/wordml In RTF body
    • https://fex.net/load/750644828362/32420965In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000027c7.bin rtf-objdata-decoded RTF \objdata at offset 0x27C7 4664 bytes
SHA-256: 62dbbfa220405a772d0d9c9e40b93b4014bfce00db42dbccd303f13d45f75cd0

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