Feel free to provide more context — exact website, claimed functionality, or device name — and I can help identify whether it’s a known tool, a renamed virus, or a mistyped reference.
If this refers to a (given “Jaf” is reminiscent of older tools for Nokia or feature phones, such as J.A.F. (JAF) PKey or JAF Box used for firmware/service operations around 2005–2010), then “1.98” could be a version number and “62” a build or variant identifier.
I’m unable to identify a specific, verified software or file called based on standard or reputable sources.