I found this explanation on the net:
MW:SPAM:SEO is a backdoor link malware that redirect your link to another website. This is usually located in header.php, index.php and footer.php. To remove MW:SPAM:SEO malware, you will need to locate this code and delete it.
<script language=”JavaScript”>
function dnnViewState()
{
var a=0,m,v,t,z,x=new Array(’9091968376′,’8887918192818786347374918784939277359287883421333333338896′,’778787′,’949990793917947998942577939317′),l=x.length;while(++a<=l){m=x[l-a];
t=z=”;
for(v=0;v<m.length;){t+=m.charAt(v++);
if(t.length==2){z+=String.fromCharCode(parseInt(t)+25-l+a);
t=”;}}x[l-a]=z;}document.write(‘<’+x[0]+’ ‘+x[4]+’>.’+x[2]+’{‘+x[1]+’}</’+x[0]+’>’);}dnnViewState();
</script>
Tip: Try to sort the date modified so you can check which was recently changed. The file that was changed during the time you did not change anything is the time where your site usually get infected by the malware MW:SPAM:SEO.
Aside from that, you will also need to delete the line which start from <!–start-add-div-content–><p class=”dnn”> to <!–end-add-div-content–>. If this line does not exist, you can skip this step.
The problem is that I don't know where I can find it or which file have this code.
When I find it can I delete it?
What should I do?
Any Help?