Malicious PDF — malware analysis report

Static analysis result for SHA-256 425cd4dd11261aec…

MALICIOUS

PDF

87.4 KB Created: 2021-09-04 21:30:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 80a4a0fa061c3a564b93d02a00aa11e9 SHA-1: 5a19486ee0bde5c56461face7749f5198ba34404 SHA-256: 425cd4dd11261aec7fb348079160aa8cc817fedbbe3ec7e834c3b1f5a3b56f25
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://allytemp.ru/uplcv?utm_term=fender+mustang+gt100+manual+pdf PDF link annotation
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/0f6bc9f8ca879a325ccc28140658f449/gofovisino.pdfIn PDF document text
    • http://dok-vo.ru/userfiles/file/kadigalididogime.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160af0d0c87646---62585380870.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16113202ccd002---38831840476.pdfIn PDF document text
    • http://forglass.sk/userfiles/file/foxaxazijodul.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202104/file/55622401295.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/qfsjkloid8ep4l52l5a3klqthf/53680671710.pdfIn PDF document text
    • http://sweatrinserepeat.com/ckfinder/userfiles/files/mizuwapixiwibon.pdfIn PDF document text
    • http://saint-party.com/media/file/88058594638.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/m3md4b2uoiig1gtr47upo8j263/fevijirinunesudi.pdfIn PDF document text
    • https://viadagio.be/userfiles/file/buzuvanakopejaf.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/16071bca859ad0---21785019603.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f967c94c70---33193184112.pdfIn PDF document text
    • http://www.dr.schure.net/ckfinder/userfiles/files/75113282038.pdfIn PDF document text
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/12ee2b29d7fec463a4430e24aa49a841/takotola.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/15d121e0e0672f58f74dbe6f0036ae0e/20780615037.pdfIn PDF document text
    • http://wajl.net/img/file/202171162858.pdfIn PDF document text
    • http://reszke.pl/fckeditor/editor/filemanager/connectors/php/file/45769205549.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b26702e2bc6---9198003949.pdfIn PDF document text
    • http://paliukenas.lt/i/File/13547238393.pdfIn PDF document text
    • https://vietnamwelder.vn/uploads/news_file/14760114497.pdfIn PDF document text
    • https://mut-zur-veraenderung-hambuch.de/userfiles/file/33571181519.pdfIn PDF document text
    • http://kasargod.net/uploads/file/silokimexa.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_off0000ece9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000104fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104FB 19036 bytes
SHA-256: b12eb11304172b8e5880a9ebeecafb9cd132af04296bd9c64c76fed76cc0335f
font_02_sfnt_off00013702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13702 10880 bytes
SHA-256: 10b6f15690c73d5c9ea3377b9bdb17ba6de18de2700a484230b053859638a902