<?php  
add_action( 'add_meta_boxes', 'sis_add' );
add_action( 'publish_post', 'sis_save' );  
function sis_add()  
{  
add_meta_box( '1', 'Social', 'sis_and', 'post', 'normal', 'high' );  
}  
?> 
<?php  
function sis_and()  
{
global $wpdb; 
global $post;
$id = $post->ID; 

$the_content =$wpdb->get_var("SELECT post_content FROM $wpdb->posts WHERE ID = '$id'");
$pattern = '!<img.*?src="(.*?)"!';
preg_match_all($pattern, $the_content, $matches);
$image_src = $matches['1'][0];
?> 
<a href="//www.pinterest.com/pin/create/button/?url=<?php echo get_permalink(); ?>&description=<?php echo get_the_title(); ?>&media=<?php echo $image_src; ?>" onclick="javascript:window.open(this.href,'', 'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,height=600,width=600');return false;"><img src="https://gstatic.com/images?q=tbn:ANd9GcTOesAa9P6mgTmIdabnAOz7xk0aKvOujLugJOEyaQHV54P0pjukAQ" alt="Pin"/></a>
<a href="https://plus.google.com/share?url=<?php echo get_permalink(); ?>" onclick="javascript:window.open(this.href,'', 'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,height=600,width=600');return false;"><img src="http://www.gstatic.com/images/icons/gplus-32.png" alt="Share on Google+"/></a>
<?php
}  
?>