Malicious PDF — malware analysis report

Static analysis result for SHA-256 425841a78e50845d…

MALICIOUS

PDF

74.9 KB Created: 2021-10-10 03:07:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 06f330d064d734d5b4ea1e4b9442da17 SHA-1: 475c287ee18f12f82f83d4df5f026f462a976bd9 SHA-256: 425841a78e50845d51ded08186242be36d26ffd8c07cd9783975af40caffa9a5
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://sentidoseg.com/resources/original/file/22883322600.pdf In PDF document text
    • http://interwork.sk/userfiles/file/nesiwenabiwugo.pdfIn PDF document text
    • http://bloemenwinkelindex.nl/images/uploads/83133345766.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/0c1a660e4e787ee842c21da721152c68/porapubideni.pdfIn PDF document text
    • http://xn----7sbicwad4afgcgd5aph7d5e.xn--p1ai/ckfinder/userfiles/files/kolesonaxazikibowizafis.pdfIn PDF document text
    • http://yokosohk.com/files/fckfiles/file/89559177860.pdfIn PDF document text
    • http://dreamscar.eu/userfiles/file/67750956026.pdfIn PDF document text
    • http://artgrafika.cz/userfiles/file/fifizusifibokabewekugaju.pdfIn PDF document text
    • http://dioblina.eu/userfiles/file/20876400098.pdfIn PDF document text
    • http://brandweeramsterdamamstellanden.nl/userfiles/file/16395295918.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1615392363c124---fevexebumixaga.pdfIn PDF document text
    • http://www.globalnautique.nl/upload/files/2346188776.pdfIn PDF document text
    • http://fobas.cz/userfiles/file/xapibumofonololadaxirorex.pdfIn PDF document text
    • http://euromarkcreations.com/new/fck_img/file/sekuwelidavixutakimaxuv.pdfIn PDF document text
    • http://kuwaited.com/cote_dor_import/admin/ckfinder/userfiles/files/94523741182.pdfIn PDF document text
    • http://bizbecho.com/pa/trainstation/uploads/image/file/53943879235.pdfIn PDF document text
    • https://brothers-music.com/ckfinder/userfiles/files/30585708704.pdfIn PDF document text
    • https://camelcarpet.org/d/files/49534447944.pdfIn PDF document text
    • http://agro-pasz.pl/ckfinder/userfiles/files/kusitofidesatenora.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/0c93b8c4a7f99302488a1cdbbb84b6b8/82252522176.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/86520150267.pdfIn PDF document text
    • http://studiobaldizzone.com/userfiles/files/bodebisasefogazalumakutaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=engineering+mathematics+3+solved+problemsPDF link annotation
    • 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_off0000bf83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF83 11320 bytes
SHA-256: d1c7d575b427ec0ab5292ab0d8ea7cc2d8fc9489876150d0987e1ab54d387b44
font_01_sfnt_off0000d989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD989 17568 bytes
SHA-256: 6e89c985f3c86eb55139b971d4fa510cb51b092ca4186f7ac0f5a927323f17a4
font_02_sfnt_off00010662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10662 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1