RTF malware analysis — malicious · 7d3efa21d112bba9

MALICIOUS

RTF

406.0 KB Created: 2018-06-04 05:47:00 First seen: 2021-02-23

MD5: ba33139c639ed299f5b12ea5f23575e2 SHA-1: f51ee8800842ea93d2bf5bac587b0779409d4455 SHA-256: 7d3efa21d112bba9e22376ebe38150840422f5df8cbbb408dcc1d2bd3a022b64

282 Risk Score

Heuristics 8

Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED

RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
ClamAV: Xls.Malware.Generic-6834349-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Malware.Generic-6834349-0
\objupdate forces OLE activation high RTF_OBJUPDATE

RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
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.
Macro/content-enable lure medium SE_ENABLE_LURE

Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
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://schemas.microsoft.com/office/word/2003/wordml In RTF body

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000037c2.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x37C2	35899 bytes
SHA-256: `52e66a3b77eeb88464895ad1804af32cba4f69107364a90181540125ed5d3c77`
Detection ClamAV: Xls.Malware.Generic-6834349-0 Obfuscation or payload: unlikely
`objdata_01_off0001a8f8.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x1A8F8	35899 bytes
SHA-256: `cb649ffec8b500280bb0695b964cc8d7e42a64d8ba05b1854e7b15ddf41981c6`
Detection ClamAV: Xls.Malware.Generic-6834349-0 Obfuscation or payload: unlikely
`objdata_02_off00031a2e.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x31A2E	35899 bytes
SHA-256: `91a86b6541945487931897d851ff0fdb2c880de3c4422c03485738ebbb50d300`
Detection ClamAV: Xls.Malware.Generic-6834349-0 Obfuscation or payload: unlikely
`objdata_03_off00048b64.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x48B64	35899 bytes
SHA-256: `4134068e05bb093b793dea750edaa09ab7a92725b331842db4df5d60e0d8a941`
Detection ClamAV: Xls.Malware.Generic-6834349-0 Obfuscation or payload: unlikely

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