Adobe Reader
Most people do not know that this program will read the text to you. It is free, awesome, and most if not all PCs have this program.
https://helpx.adobe.com/reader/11/using/accessibility-features.html
Texthelp PDF Reader
This app will read and annotate PDFs. The app is often used with Read & Write from Texthelp.
PDF Voice Reader Pro
This app reads PDFs for you. You can even read the text in 30 different languages. Best of all, the apps integrate with a number of online storages services, including Google Drive.
https://itunes.apple.com/us/app/pdf-voice-reader-pro/id1227429378?mt=8
ClaroPDF - Accessible Pro PDF Reader and Viewer with text to speech (TTS) and annotations
This app allows you to annotate a PDF, and then it reads it to you.
https://itunes.apple.com/us/app/claropdf-accessible-pro-pdf/id633997623?mt=8