You can easily copy content in Acrobat Reader DC, unless the PDF author has applied security settings that disallow copying.
The Snapshot tool copies an area as an image that you can paste into other applications.
Choose Edit > Take A Snapshot.
Drag a rectangle around the area you want to copy, and then release the mouse button.
Press the Esc key to exit Snapshot mode.
In another application, choose Edit > Paste to paste the copied image.