Malicious RTF — malware analysis report

Static analysis result for SHA-256 d54de2016b2db04c…

MALICIOUS

RTF

43.2 KB Created: 2017-10-09 09:19:00 First seen: 2017-10-28
MD5: 788e156e224cf3bcdd139596c38b39c3 SHA-1: 3381d9bc753a4f6483105c877f1912779c8d08da SHA-256: d54de2016b2db04c04e05a297327048dfcf2193e5190cf3d9052e853734ff8a6
202 Risk Score

Malware Insights

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

The RTF file contains critical heuristic firings indicating exploitation of CVE-2017-0199. This vulnerability is leveraged to fetch a remote OLE object from 'http://almahalliah.com/css/dotpoli.dot', which is likely a malicious payload. The presence of OLE object data and automatic linking 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 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://almahalliah.com/css/dotpoli.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_off000026f8.bin rtf-objdata-decoded RTF \objdata at offset 0x26F8 4632 bytes
SHA-256: 6b283908ffe20d3d39a55bf37e4843d008ed697d71b9acff6420206c2933bfc0

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