Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 baad1153e58c86aa…

MALICIOUS

RTF / .DOC

1.36 MB Created: 2026-01-29 17:18:00
MD5: 6408276cdfd12a1d5d3ed7256bfba639 SHA-1: f2f66f4c96f93f17b588736455e9b279c44b6049 SHA-256: baad1153e58c86aa1dc9346cdd06be53b5dd2a6cf76202536d6721c934008f8e
260 Risk Score

Malware Insights

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

The RTF file contains multiple OLE objects and excessive hex-encoded data, indicative of a hidden payload. Critical heuristics identify specific vulnerabilities, CVE-2026-21509 and CVE-2026-21514, related to Shell.Explorer.1 CLSID and OLE security bypass within the RTF structure. These findings strongly suggest the file is designed to exploit these vulnerabilities for initial execution.

Heuristics 7

  • CVE-2026-21509 — Shell.Explorer.1 CLSID in RTF critical CVE related CVE_2026_21509
    RTF document contains the Shell.Explorer.1 CLSID {EAB22AC3-30C1-11CF-A7EB-0000C05BAE0B} associated with CVE-2026-21509 (OLE/COM Killbit / Protected View bypass). Actively exploited in the wild.
  • CVE-2026-21514 — Word/OLE security bypass in RTF high CVE likely CVE_2026_21514
    RTF document contains an embedded Word package with a webSettings frame relationship to a local Windows diagnostics XML target. That matches observed CVE-2026-21514 exploitation, where crafted Word/OLE metadata bypasses Office security decisions when opened.
    URL http://schemas.m
  • ClamAV: Win.Exploit.CVE_2026_21514-10059348-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Exploit.CVE_2026_21514-10059348-0
  • Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX
    RTF contains ~1299KB of hex-encoded data inside \objdata sections — may hide a payload
  • OLE object data medium RTF_OBJDATA
    RTF contains 4 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • 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.

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