Can someone please explain these blackhat backlinks?

These are hacked sites links for sure, building so many links in so short time normally gets sites sandboxed.

That is one keyword you should not even be looking at unless you are a very experienced blackhatter with a 4 or 5 figure monthly budget and specific strategy in place, not to mention its one of those keywords G manually reviews every couple of weeks so expect to be ranking top 10 for 2 weeks max.