importing K1 in PDF format into TT Premier

You can not import a K-1 Schedule using TurboTax Premier OnLine.  You will have to enter the data manually. 

 To enter a K-1 follow these steps:

1. Open your account if it is not open
2. Enter K-1 in the search box.
3. Click on Jump to K-1 in the results box
4. Follow the screen prompts to enter your K-1

How about the desktop version? Can I import from a pdf file?

No.  You can only import a K-1 in .txt format.