Malicious PDF — malware analysis report

Static analysis result for SHA-256 425c3ab80e89de1f…

MALICIOUS

PDF

69.1 KB Created: 2021-12-08 22:42:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 385e51e4478d19d1cc0964bc90d87b35 SHA-1: 570c09c03c6976baf18127b2fdf0f2c4c801fd26 SHA-256: 425c3ab80e89de1f242f11fe0b83e7671a9a095bfc49cdf352ead81d3ef64d02
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • 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://catamma.ru/uplcv?utm_term=estrada+santa+efigenia+101+taquara+r PDF link annotation
    • https://total-sport.pl/img/upload/files/11458762572.pdfIn PDF document text
    • http://dentherapia.hu/files/file/67952198208.pdfIn PDF document text
    • http://hamlineparkplaza.com/assets/amund/ckfinder/userfiles/files/34519536391.pdfIn PDF document text
    • https://gimenezricarte-deltabogados.com/ckfinder/userfiles/files/fusaxulosetimanodoze.pdfIn PDF document text
    • http://szymonadamczyk.pl/uploads/fck/file/tesisenip.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/161817278e650c---74924460460.pdfIn PDF document text
    • http://heatexchangersolution.com/upload_fck/file/2021-9-27/20210927105658191207.pdfIn PDF document text
    • http://vipacademy.org/userfiles/file/gizimaganepixafifojifa.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/guu9pmc9l9sblg8g744ql3t77v/29816202035.pdfIn PDF document text
    • http://tiendanatacion.com/noticias/files/lefejex.pdfIn PDF document text
    • https://telliogluhukuk.com/userfiles/file/45591985298.pdfIn PDF document text
    • https://odlingfamily.com/userfiles/file/82904204963.pdfIn PDF document text
    • http://ventexevent.se/uploads/file/78090977654.pdfIn PDF document text
    • http://mientaytourist.com/uploads/files/tuxajelipeledewojirumigo.pdfIn PDF document text
    • https://buyafranchise.org/files/files/26417191706.pdfIn PDF document text
    • http://brickchamber.com/ckfinder/userfiles/files/gepepiduwujuwerusataviduf.pdfIn PDF document text
    • https://quanticabtl.com/cms_2018_quantica/sgi_userfiles/userfiles/files/sonew.pdfIn PDF document text
    • https://careersourceokaloosawalton.com/files/public/45306319766.pdfIn PDF document text
    • http://aktifimmo.lu/userfiles/files/19911635453.pdfIn PDF document text
    • https://bunexim.dascalita.ro/app/webroot/files/userfiles/files/63063694717.pdfIn PDF document text
    • http://braghieriarchitettura.com/userfiles/files/46610236427.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/d7f2967c5795c5cef43691a89e281f1e/gelajodemuxafixox.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • 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_off0000ac5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC5B 10764 bytes
SHA-256: 63d9c1c7db9ab178aa077fc0aaad3839ba44dc6f92131dc7c6e1cfc14e967a2b
font_01_sfnt_off0000c4c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4C4 16608 bytes
SHA-256: b2d66354d3d54fd417e32f377bd0446373e224b237093b3812c48cbdb3f25a59
font_02_sfnt_off0000f016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF016 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336