alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT PDF Name Representation Obfuscation of Action"; flow:established,to_client; content:"|0d 0a 0d 0a|PDF-"; content:"/"; distance:0; content:!"Action"; within:6; content:"#"; within:16; pcre:"/\x2F(?!Action)(A|#41)(c|#63)(t|#74)(i|#69)(o|#6F)(n|#6E)/"; reference:url,blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/; classtype:bad-unknown; sid:2011529; rev:6; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, deployment Perimeter, tag Web_Client_Attacks, signature_severity Major, created_at 2010_09_27, updated_at 2016_07_01;)

Added 2017-08-07 21:04:40 UTC


alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT PDF Name Representation Obfuscation of Action"; flow:established,to_client; file_data; content:"PDF-"; within:4; content:"/"; distance:0; content:!"Action"; within:6; content:"#"; within:16; pcre:"/\x2F(?!Action)(A|#41)(c|#63)(t|#74)(i|#69)(o|#6F)(n|#6E)/"; reference:url,blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/; classtype:bad-unknown; sid:2011529; rev:4;)

Added 2012-04-16 18:46:09 UTC


alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT PDF Name Representation Obfuscation of Action"; flow:established,to_client; content:"PDF-"; depth:300; content:"/"; distance:0; content:!"Action"; within:6; content:"#"; within:16; pcre:"/\x2F[^Action](A|#41)(c|#63)(t|#74)(i|#69)(o|#6F)(n|#6E)/i"; reference:url,blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/; classtype:bad-unknown; sid:2011529; rev:2;)

Added 2011-10-12 19:32:11 UTC


alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT PDF Name Representation Obfuscation of Action"; flow:established,to_client; content:"PDF-"; depth:300; content:"/"; distance:0; content:!"Action"; within:6; content:"#"; within:16; pcre:"/\x2F[^Action](A|#41)(c|#63)(t|#74)(i|#69)(o|#6F)(n|#6E)/i"; classtype:bad-unknown; reference:url,blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/; sid:2011529; rev:2;)

Added 2011-02-04 17:31:21 UTC


alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT PDF Name Representation Obfuscation of Action"; flow:established,to_client; content:"PDF-"; depth:300; content:"/"; distance:0; content:!"Action"; within:6; content:"#"; within:16; pcre:"/\x2F(A|#41)(c|#63)(t|#74)(i|#69)(o|#6F)(n|#6E)/i"; classtype:bad-unknown; reference:url,blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/; reference:url,doc.emergingthreats.net/2011529; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/WEB_CLIENT/WEB_Adobe; sid:2011529; rev:2;)

Added 2010-09-22 11:26:16 UTC


Topic revision: r1 - 2017-08-08 - TWikiGuest
 
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