epdfview is a fast and simple pdf viewer with default hand tool to pan the pdf document.
epdfview is just 125 kilobytes download size in ubuntu/debian and renders pdf well
By default it has the hand tool enabled and we can use mouse to drag the document up and down. When doing this mouse pointer changes to hand cursor
This is unlike evince default document viewer of gnome, which has hand tool only on middle click of mouse which is cumbersome with my stupid mouse
installing epdfview in ubuntu/debian is one step away, using the following command line (or tick epdfview from synaptic)
sudo apt-get install epdfview