Malicious RTF — malware analysis report

Static analysis result for SHA-256 3d34abe878d92291…

MALICIOUS

RTF

43.5 KB Created: 2017-07-13 15:50:00 First seen: 2018-03-04
MD5: 4594d265819c29ae4c709af024ee9fb6 SHA-1: 43e250021d8d310fd69bd5c53b224f223cb6dd2d SHA-256: 3d34abe878d92291bb77fd1dc471d95b339809445f98ae168cdce4b56179aaf0
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 an OLE object and attempts to download a payload from the provided URL. This suggests the file is a malicious document designed to deliver a second-stage payload to the victim.

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/050009942685/23250183In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000027e3.bin rtf-objdata-decoded RTF \objdata at offset 0x27E3 4664 bytes
SHA-256: bf775e2c158f0e033cc12b95426c9f9195fc12477e6a99347c62378897312890

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