Malicious RTF — malware analysis report

Static analysis result for SHA-256 ef731fc486c768f1…

MALICIOUS

RTF

43.2 KB Created: 2017-10-18 12:31:00 First seen: 2017-10-28
MD5: 9af68a9d913360c531ba9f90d9032c50 SHA-1: 3c707e17c15a3e2118d8559d42d50ad2b2d88512 SHA-256: ef731fc486c768f12984d822331048518b51d3489b826f006c90eff0d527c9b3
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 leverages CVE-2017-0199 to automatically link to and download a remote OLE object from http://wizkiddz.xyz/dotinv.dot. This technique is commonly used to deliver secondary payloads, indicating a malicious intent to execute arbitrary code on the victim'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://wizkiddz.xyz/dotinv.dot In RTF body
    • http://schemas.microsoft.com/office/word/2003/wordmlIn RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000270f.bin rtf-objdata-decoded RTF \objdata at offset 0x270F 4632 bytes
SHA-256: f1cd3597c99e57ba54e710afcf31a713273f3a2e4f6cdeb847070f674ca51933

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