I am sorry, I do not speak German. But I too have come across these strange 404 requests in my logs and I wonder what they are. Below is a sample of my raw logs. There are many lines of entry like these.
These illegitimate requests tend to end with "_files/ads", "_archivos/ads.htm" or "-Dateien/ads.htm"
The IPs come from all over the world and appear legitimate.
There is no common ground of ISP or operating system.
The PAGE TITLE appears in the GET request, with "%20" replacing the spaces, and terminated with "_files/ads" or "-Dateien/ads.htm" or some alphanumeric code like "CA2FU7E9.html" (this code is sometimes much, much longer).
Code: Alles auswählen
"GET /IFRAME%20SRC=%220vertmenu.html%22%20WIDTH=120%20HEIGHT=600%20border=0%3E HTTP/1.1" 404 - "http://mydomain.com/2victorian6.html" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.11) Gecko/20070312 Firefox/1.5.0.11"
"GET /IFRAME%20SRC=%220vertmenu.html%22%20WIDTH=120%20HEIGHT=600%20border=0%3E HTTP/1.1" 404 - "http://mydomain.com/2poppies.html" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3"
"GET /IFRAME%20SRC=%220vertmenu.html%22%20name=%22Free_Knitting_Patterns%22%20border=%220%22%20alt=%22Free%20Cable%20Knitting%20Patterns%22%20WIDTH=120%20HEIGHT=1800%20border=0%3E HTTP/1.1" 404 - "http://mydomain.com/1set02.html" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3"
"GET /Pansies%20Round%20Window%20Cable%20Knitting%20Pattern_files/0vertmenu.htm HTTP/1.1" 404 - "http://mydomain.com/2pansyround.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)"
"GET /Scottish%20Thistle%20Cable%20Knitting%20Pattern_files/0vertmenu.htm HTTP/1.1" 404 - "http://mydomain.com/2fancythistle.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)"
"GET /Pine%20Cone,%20Cable%20Knitting%20Pattern_files/0vertmenu.htm HTTP/1.1" 404 - "http://mydomain.com/2pinecone.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)"
"GET /Family%20Tree%20Cable%20Knitting%20Pattern_files/0vertmenu.htm HTTP/1.1" 404 - "http://mydomain.com/2familytree.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)"
"GET /Oriental%20Poppies%20Cable%20Knitting%20Pattern_files/0vertmenu.htm HTTP/1.1" 404 - "http://mydomain.com/2poppies.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)"
"GET /Art%20Nouveau%20Lilies%20Cable%20Knitting%20Pattern_files/0vertmenu.htm HTTP/1.1" 404 - "http://mydomain.com/2artnouveaulilies.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)"
"GET /Fence%20Repeat%20Cable%20Knitting%20Pattern-Dateien/ads.htm HTTP/1.1" 404 - "http://mydomain.com/2fencerepeat.html" "Mozilla/4.0 (compatible; MSIE 7.0; AOL 9.0; Windows NT 5.1)"
"GET /Greenman%20Cable%20Knitting%20Pattern_files/CAU78DKT.htm HTTP/1.1" 404 - "http://mydomain.com/2greenman.html" "Mozilla/4.0 (compatible; MSIE 6.0; AOL 9.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)"
"GET /Tabby%20Kitten%20Cable%20Knitting%20Pattern_files/CA1HUWA6.htm HTTP/1.1" 404 - "http://mydomain.com/2tabbykitten.html" "Mozilla/4.0 (compatible; MSIE 6.0; AOL 9.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)"
"GET /Plumeria%20(Frangipani)%20Cable%20Knitting%20Pattern_files/ads.htm HTTP/1.1" 404 - "http://mydomain.com/2plumeria.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
"GET /Red%20Wing%20Blackbird%20Cable%20Knitting%20Pattern_files/ads.htm HTTP/1.1" 404 - "http://mydomain.com/2redwingblackbird.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
"GET /King's%20Bird%20of%20Paradise%20Cable%20Knitting%20Pattern_files/ads.htm HTTP/1.1" 404 - "http://mydomain.com/2kingbop.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
"GET /Asiatic%20Lily%20Cable%20Knitting%20Pattern_files/ads.htm HTTP/1.1" 404 - "http://mydomain.com/2asiaticlily.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
"GET /Oval%20Oriental%20Poppies%20Cable%20Knitting%20Pattern_files/ads.htm HTTP/1.1" 404 - "http://mydomain.com/2ovalpoppies.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
"GET /Gothic%20Wheat%20Cable%20Knitting%20Pattern-Dateien/ads.htm HTTP/1.1" 404 - "http://mydomain.com/2gothicwheat.html" "Mozilla/4.0 (compatible; MSIE 7.0; AOL 9.0; Windows NT 5.1)"
"GET /Free%20Cable%20Knitting%20Patterns_files/CA2FU7E9.htm HTTP/1.1" 404 - "http://mydomain.com/1set08.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)"
"GET /Free%20Cable%20Knitting%20Patterns2_files/CARAWZND.htm HTTP/1.1" 404 - "http://mydomain.com/1set03.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)"
"GET /Free%20Cable%20Knitting%20Patterns4_archivos/ads.htm HTTP/1.1" 404 - "http://mydomain.com/1set04.html" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)"
"GET /Free%20Cable%20Knitting%20Patterns5_archivos/ads.htm HTTP/1.1" 404 - "http://mydomain.com/1set05.html" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)"
"GET /Free%20Cable%20Knitting%20Patterns6_archivos/ZYCALRCFV2CAVFZE73CAYW2WCQCA65OHQFCAUPVY29CAGWMKLYCAACSTP3CAD53GXICAKC5TSLCABMP8UCCAXGVL6KCANIZS0NCAC36B93CAVLBKTHCAR0TUNACAYJV6DNCAI62FBF.htm HTTP/1.1" 404 - "http://mydomain.com/1set06.html" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)"
"GET /Free%20Cable%20Knitting%20Patterns8_archivos/8OCA69857LCABGT9ARCAZZ6POXCAPQWZU0CAEZCS7ZCADA85VHCA4ZN1ZNCAW359N2CAK8M0MXCA232EN5CATL0ANDCAKLAKBGCANYO2MACAGE2PL9CA5FR6LACAJ7S1NZCAETTMTN.htm HTTP/1.1" 404 - "http://mydomain.com/1set08.html" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)"
"GET /Asiatic%20Lily%20Cable%20Knitting%20Pattern_files/CAB8J7T8.htm HTTP/1.1" 404 - "http://mydomain.com/2asiaticlily.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; SIMBAR Enabled; .NET CLR 1.1.4322)"