Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 1ed863a32372160b…

MALICIOUS

RTF / .DOC

137.3 KB Created: 2026-01-29 05:21:00 First seen: 2026-02-03
MD5: 2f7b4dca1c79e525aef8da537294a6c4 SHA-1: c4799d17a4343bd353e0edb0a4de248b99295d4d SHA-256: 1ed863a32372160b3a25549aad25d48d5352d9b4f58d4339408c4eea69807f50
202 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The RTF file contains embedded OLE objects and exploits known vulnerabilities (CVE-2026-21509 and CVE-2026-21514) related to Shell.Explorer.1 CLSID and Word/OLE security bypass. These heuristics indicate the file is designed to execute arbitrary code upon opening. The embedded URL http://192.168.217.250/scr2.rss is likely used to download and execute a secondary payload, although no scripts were directly extracted to confirm this.

Heuristics 6

  • 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.
  • ClamAV: Win.Exploit.CVE_2026_21514-10059348-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Exploit.CVE_2026_21514-10059348-0
  • OLE object data medium RTF_OBJDATA
    RTF contains 4 \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://192.168.217.250/scr2.rss
    • http://schemas.microsoft.com/office/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000fab4.bin
001691e7d2773e77b0876a2c848b889cd4d9e8a48ef8b5dd209571a089e89f4a		 rtf-objdata-decoded RTF \objdata at offset 0xFAB4 2809 bytes
objdata_01_off00011102.bin
a118055da1af339dcf635bcc04b496a1dcb29c2452565a0004f3573271152c53		 rtf-objdata-decoded RTF \objdata at offset 0x11102 2609 bytes
objdata_02_off000126a5.bin
9637c13251cf0525c0229c4406f7bb436e0102be7b39a23dbb95f9424085be27		 rtf-objdata-decoded RTF \objdata at offset 0x126A5 2609 bytes
objdata_03_off00013c5b.bin
09287a551626fbb376f0d40893eb8dc359d22f56c42f4ab3d75e66ec31cf5c99		 rtf-objdata-decoded RTF \objdata at offset 0x13C5B 29044 bytes

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