Random Request to apache - Please help!

[AWSolutions]

Hi,

I noticed my server load spiked and I went to server-status and I see the following request going to the "default" domain:

I am getting alot of server hits form Chinese ip's with the following data....what is this? I am scared its an attack of some kind. I have bloicked about 6-8 ISP's CIDR's and the request have stopped or slowed now. But I know if this is untreated it will only come back to haunt me.
Srv PID Acc M CPU SS Req Conn Child Slot Client VHost Request
32-1 14947 0/61/61 _ 2.24 0 2 0.0 0.66 0.66 218.79.189.244 default

\xf5\xeb~Tz\xce%MM\x10
5\x8eO\xb1\xbeK\x17`\xdeRF\xcd\xb5\xfaX\xf8\xb5\xe0\xdb\x02\xf8\x02\xc28\xb5\xb9\xa5\xbf\x91\x1b*\xbd\xd2\xf9#J\xed\xe3\x8eUJ\xc6,*\xdc?F\x9dp\xaf\xcc\xfe

Thanks!

 

[abdi]

That sounds like a dos-attack. Stop such attacks easily with dos-deflate. Installation details here:

http://www.ivankristianto.com/os/ubuntu/defend-against-ddos-attack-with-ddos-deflate/1442/