If it is, can you please provide the steps?
Not native and we probably never will have an Ubuntu version for Adobe Reader. Adobe dropped support for Linux somewhere in 2013. 9.5.5 is still available on their website but 10 and 11 are nowhere to be found.
You can try to install 11 with Wine but I doubt it is worth your time since neither 10 nor 11 have a good rating.
- Status on wineHQ for AR10: Garbage
- Status on AR11: Bronze. See "Important Note on How to Install and run Adobe Reader 11.x" below the status. Someone got it working but it will be a lot of trial and error. Plus you probably need a fair amount of knowledge on how Wine works.
If you have to have it I would install a Windows in a VirtualBox and install/use it from there.