Hi there,

Now a days listening to documents is more preferred than reading it out, it saves time, you can even multitask and above all can retain the information for a longer time.

The following are some of the apps that would read aloud your pdf:

Adobe Acrobat

eReader prestigio

Xodo pdf reader

Natural reader text to speech

Voice aloud reader.

Pdf speaker.

Hope this helps.

Best wishes.