Malicious RTF — malware analysis report

Static analysis result for SHA-256 7e16ca75d0865ac8…

MALICIOUS

RTF

50.8 KB Created: 2017-09-23 16:16:00 First seen: 2017-10-10
MD5: 19f1a23947b426cb795375324c83f07c SHA-1: 8c7b35f8c3080eb3d29e83f99be6058312a993d5 SHA-256: 7e16ca75d0865ac89afb140e8038b800b8167f2b12ea4c30ae43d8cbe9fcf521
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 the embedded URL http://192.168.0.134/ms/ms.rtf to download and likely execute a secondary payload. The presence of OLE object data further supports the exploitation mechanism.

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://192.168.0.134/ms/ms.rtf 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_off00002899.bin rtf-objdata-decoded RTF \objdata at offset 0x2899 5700 bytes
SHA-256: d6fcb9eb31c7628c278409e5a2cdf538b52325a4fe8a78cddc1ae5331d895157