Solution:
You can do it by creating a hook for post_row_actions filter
add_filter( 'post_row_actions', 'wpse8170_row_actions', 10, 2 );
function wpse8170_row_actions( $actions, WP_Post $post ) {
if ( $post->post_type != 'my-custom-post-type' ) {
return $actions;
}
$actions['wpse8170-pdf'] = 'http://your/url/here';
return $actions;
}
Read this
http://pippinsplugins.com/add-custom-links-to-user-row-actions/
or read this one
http://www.codeforest.net/add-custom-links-to-row-actions-in-wordpress