Malicious RTF — malware analysis report

Static analysis result for SHA-256 2b71f3e19f1588a0…

MALICIOUS

RTF

2.71 MB Created: 2017-09-08 01:34:00 First seen: 2017-09-14
MD5: 851236ab2623bc38ae01caf21c15b6c1 SHA-1: 914f6b7571ab728cd43de88b9aed2725f737732b SHA-256: 2b71f3e19f1588a0fb5dc4da667f6c3bf6c9f9ecee2389c000b8adb6a9823f18
242 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains OLE object data and an automatically linked OLE object, indicating it is weaponized. It exploits CVE-2017-0199 by embedding a URL that points to a template.hta file on an FTP server, likely to download and execute a second-stage payload. ClamAV also detected this file as a dropper.

Heuristics 7

  • CVE-2017-0199 (OLE2Link / weaponized URL) critical CVE exact CVE_2017_0199_WEAPONIZED_URL
    RTF contains a URL Moniker OLE link to a script/HTA/template-style remote loader, matching the tighter static CVE-2017-0199 shape.
  • ClamAV: Doc.Dropper.Agent-7161335-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-7161335-0
  • 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.
  • Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX
    RTF contains ~2801KB of hex-encoded data inside \objdata sections — may hide a payload
  • 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://domain.com/uag.php 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_off00002a50.bin rtf-objdata-decoded RTF \objdata at offset 0x2A50 4242 bytes
SHA-256: baf1086a37d459c0e18c14d2d037fdbd947f56a799996ed442ed0a756fd76ee7

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