Almost everyone I've ever seen link to their own binaries on virus total was in fact distributing malware.  Virustotal is worthless for the kind of custom malware that is often posted on this forum and gives people a false sense of security.

There are many programs out there for shamir secret sharing, such as http://point-at-infinity.org/ssss/  most implementations I've seen leave a lot to be desired, including insecure random number generation which doesn't grant full information theoretic security, to incorrect share splitting such that sub threshold collections are sufficient to recover most of a key, to just gross timing sidechannels which any secret key handling software should avoid.

It is my view that In general, secret sharing is largely snake oil in practice because you must have a computer to split and join keys and if that computer is compromised your security is gone.  If you really had a compromise immune computer, just leave your key there and avoid the pointless ritual.

Bitcoin has multisignature which allows split keys without any single point of failure. Anyone considering secret sharing should first have a darn good reason they aren't using multisig.