weird URL's in syslog



I have been monitoring a small LAn which was blacklisted for sending out
SPAM. I can see one host in there which is from time to time going to a
host using very strange URL's omn port 80. They look like....

304001: 192.168.1.10 Accessed URL
194.18.118.2:/1/?A4q6ADclfzEXNg%2F8klPB05SCdAAzDo%2BjJ7Jihuk6zhQZU29waG9zIFNtYWxsIEJ1c2luZXNzIFNvbHV0aW9ucwAxLCAwLCAyLCAwAFNvcGhvcyBwbGMARW5nbGlzaCAoVW5pdGVkIEtpbmdkb20pAEM6XFdJTkRPV1NcVGVtcFxzb3RtcDEuZGlyXEFMVXBkYXRlLmV4ZQAzMS8wMS8yMDA2IDEzOjQ0OjQy
Anyone know what this is?

Sorry, is anyone prepared to tell me :-)






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