Malicious RTF — malware analysis report

Static analysis result for SHA-256 34e7d7e8722eb948…

MALICIOUS

RTF

45.7 KB Created: 2018-11-27 23:47:00 First seen: 2019-11-20
MD5: aca58c74c96456cba860868dd880adc1 SHA-1: bb315f94283f6e1d5514979d7b8de76a35434805 SHA-256: 34e7d7e8722eb9487ad8914c2a42d467f1ccfd2458eda6fad0a961a43f75bbc2
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 exploits CVE-2017-0199, a known vulnerability for remote code execution. The exploit targets the URL http://104.248.146.66/ to download and execute a secondary payload. This indicates a malicious document likely delivered as a spearphishing attachment.

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://104.248.146.66/ 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_off000027bd.bin rtf-objdata-decoded RTF \objdata at offset 0x27BD 3714 bytes
SHA-256: 063a29e2ea88ff9920b51f19dc5a437332dcd874992070f040629eb844130597

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