I’m still on Photoshop CS5 but haven’t had a DVD drive for many years, so I needed to find the online download version of it. I searched for a while and finally found the “Download and Installation Help” page, which has Photoshop CS3, CS4, CS5, CS5.5 and CS6.
Definitely do not download any Adobe product from any site other than Adobe.com. It is likely malware.
Hopefully this saves you some time.