Malicious RTF — malware analysis report

Static analysis result for SHA-256 16d2aeeabef6c933…

MALICIOUS

RTF

49.5 KB Created: 2017-05-01 20:09:00 First seen: 2017-10-10
MD5: 98e00ed0515639621005db5a25545220 SHA-1: fe6348eccbda862a90608f55b20cc87a49b9322f SHA-256: 16d2aeeabef6c933fc2ec035d7cb709aa54fab0b9bc1c22b2431db1ef707b0bc
202 Risk Score

Malware Insights

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

The RTF file contains embedded OLE objects and triggers critical heuristics for CVE-2017-0199, indicating an exploit targeting this vulnerability. The exploit attempts to download a secondary file from the URL http://192.168.1.38/test.rtf, which is likely a malicious payload. The presence of OLE object data further supports the exploitation vector.

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 2 \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://192.168.1.38/test.rtf In RTF body
    • http://schemas.microsoft.com/office/word/2003/wordmlIn RTF body

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000031ec.bin rtf-objdata-decoded RTF \objdata at offset 0x31EC 3714 bytes
SHA-256: 5d3b7ab653d4204e8d3949664636719b7b5684a4fe169e9305304a2ed44c36f2
objdata_01_off0000547c.bin rtf-objdata-decoded RTF \objdata at offset 0x547C 3714 bytes
SHA-256: 39c2e2e1501123dd93a6d77625b95bf0f854e2003b9b5ec1d9ded5f72678f026

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