Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d613bfcf5721e3…

MALICIOUS

PDF

108.1 KB Created: 2022-05-05 10:39:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 03c124e755d58e1113c500053b95b364 SHA-1: 67e764d8e65379d5eb13bdf86b26e0599d270820 SHA-256: c5d613bfcf5721e33bedbf5abb490148d64170de85b518b9bcec1f2a62862364
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://colod.co.za/YmrXLWy8?keyword=sergio%20tobon%20libros%20en%20english%20pdf%20free PDF link annotation
    • https://pezuzaje.weebly.com/uploads/1/3/4/5/134577214/3524229.pdfIn PDF document text
    • https://dumuzuvo.weebly.com/uploads/1/3/4/6/134695275/semevapaxeto.pdfIn PDF document text
    • https://polalakenasi.weebly.com/uploads/1/3/0/8/130813885/kopotivofujezenijija.pdfIn PDF document text
    • http://avgustal.ru/kcfinder/upload/files/fojowebixefowolix.pdfIn PDF document text
    • http://eikenhorstgroep.nl/userfiles/file/vajemalitasupowazodobep.pdfIn PDF document text
    • https://kenjiintlhk.com/UploadFiles/file/20220222091558166.pdfIn PDF document text
    • http://scales-center.com/shop/fck_file/file/jijadoj.pdfIn PDF document text
    • http://divyabodhanam.org/userfiles/file/guvafoponajafaji.pdfIn PDF document text
    • https://tefoxowab.weebly.com/uploads/1/4/1/3/141393242/0d2dfab.pdfIn PDF document text
    • http://euromarkcreations.com/new/fck_img/file/49896766716.pdfIn PDF document text
    • https://zuxubemusaf.weebly.com/uploads/1/3/1/4/131453996/zumofaliwis.pdfIn PDF document text
    • https://www.agro-zavod.ru/app/webroot/js/ckfinder/userfiles/files/77406993266.pdfIn PDF document text
    • http://overcomeproblems.com/images/files/walejetifafibiwokusipaj.pdfIn PDF document text
    • https://zofasakibure.weebly.com/uploads/1/3/6/0/136049738/be482031cc.pdfIn PDF document text
    • https://oldd.adventurenetbg.com/userfiles/file/jugukirekuroxu.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16205ed930a7b5---76788036725.pdfIn PDF document text
    • https://jerepuda.weebly.com/uploads/1/3/4/7/134745202/debuvobu.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16266e9df732ce---jozofiroriwubonitupudud.pdfIn PDF document text
    • https://easyown.ddproperty.com/datas/files/7908851040.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#Referenced by PDF JavaScript
    • http://purl.org/dc/elements/1.1/Referenced by PDF JavaScript
    • http://ns.adobe.com/pdf/1.3/Referenced by PDF JavaScript
    • http://ns.adobe.com/xap/1.0/Referenced by PDF JavaScript
    • http://ns.adobe.com/xap/1.0/mm/Referenced by PDF JavaScript
    • http://ns.adobe.com/xap/1.0/rights/Referenced by PDF JavaScript
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14228 17956 bytes
SHA-256: f2da2023dc592140ba2951975b9d1af5fa73955718c52e3ffe0815c6bfbf65a1
font_01_sfnt_off00016f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F3C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00018753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18753 10828 bytes
SHA-256: d9f334e974776d53ab03115b9b99b25400e24cdb9eb0440d90ebf806daae4d80

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