When e-filing a tax return, you cannot attach a PDF or other file to it. There is no way to upload documents to transmit with your tax return, unless they are generated by the TurboTax program.
If you need to include a document that is not included in the TurboTax program, then you will have to print and mail the tax return. When you print your state tax return, mailing instructions will be included on the first page.
Click this link for How do I file my return by mail?