Natural or modded Bloodletter?

I have a Bloodletter with +5 to Desperate Measures. I traded for it and some are speculating it may be modded. I can’t say definitively as it wasn’t a drop for me.

Can a Bloodletter naturally roll with +5 to Desperate Measures or is this class mod definitely modded?

Yes it is modded. Desperate Measures is a 3-point skill so the most it can be boosted by is 3 (at least as of now).