I don't think Ultimate Quckhacks can be found as a random drop anywhere but from hacking an access point and even then you need a certain perk in the Breach protocol. I can't remember the name of the perk but if I remember correctly it's 2 points invested into it and your intelligence stat does not need to be that big to acquire it (still pretty sure it should be higher than 3). If you get this, then you can find an access point that you can hack, which with a low intelligence staff might not be triavial but there are access points available at low intelligence, and then just save scum. You will get a random quick hack anyway with each successful breach.
You stil get quick hacks from access points though, even without that perk, the perk just increases the chance to 100% but then the drops are very rare, and it might take ages to save scum yourself an UQH.
Other than that, there's a perk in Intelligence called Bartmoss Legacy, that will just give you crafting recepies for the UQHs. Then it's a high intellegience perk, so it's out of reach for your planned character most likely.
Besides those 2 ways, I don't think there's any other that can net you a UQH.