<object classid="clsid27CDB6E-AE6D-11CF-96B8-444553540000" id="obj1" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0" border="0" width=“728" height=“90">
<param name="movie" value="728x90.swf">
<param name="quality" value="High">
<embed src="http://fs2.directupload.net/images/150626/ouujfaij.swf?url=http://bit.ly/1JMHqnR" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" name="obj1" width="728" height="90" quality="High"></object>

Yukarıdaki reklam kodunu siteye ekleyince, google webmaster toolsta tüm sayfalarda http://www.siteadresi.com/728x90.swf diye 404 hataları veriyor.

Hata örneği: http://prntscr.com/7tyd3k

Bu sorunu neden kaynaklanıyor?