Use a tool like VirusTotal to check the file before extracting.

Native Windows support for RAR is limited, often requiring this third-party install.

Technically "free-to-use" with a persistent trial notification that never actually expires.

If you prefer not to use WinRAR, these free alternatives are highly rated by users:

WinZip opens and extracts RAR Compressed Archive Files—and many more formats. WinRAR download free and support: WinRAR

Knowing the source of the "Wond" file would help in providing a more specific review of its contents. Need to open, create, or convert a RAR file? - WinZip