AdSlash.com is a bogus ad network

We've seen a number of ads being punted through AdSlash.com to legitimate ad networks, but it appears that these are leading to a PDF Exploit (don't visit these sites, obviously!).For example:fwlink.nx7.zedo.com.adslash.com/?alx=a27131939386&td=qcbp71pz=42834&sz=728x90&_zm=359161&st=n1n4&id=131939386&zcw=gh17chl277&xryr=3913771&mp=1460h1fwlink.nx7.zedo.com.adslash.com/stats_js_e.php?id=131939386