The PID/IVs are correct. They are clones of known events. It looks like they were recreated though (maybe from gen 7 to gen 3 or something) as they are missing trash bytes and have the wrong held item.
Attached are the originals from my collection.
RS - ネガイボシ Jirachi (05A0) (JPN).pk3
RS - ネガイボシ Jirachi (F20A) (JPN).pk3
there's a reason why our site is linked in that video of theirs XD
I don't know how much Event pokemon they obtained by themselves (and how much they may have contributed to suloku,
but what I know for certain, is that we've been hoarding events for years XD
It's always good to have the community come together to archive important data, before it's lost to time.