Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddb25aa0a7686f5…

MALICIOUS

PDF

89.8 KB Created: 2021-08-18 22:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: be6602f552f18e1a6778320acec61a12 SHA-1: 1956f49d79b960b8b6003dbd742f271fd33a751d SHA-256: 3ddb25aa0a7686f529ca4176b6a07d868a2ee46bd36c8e6f800d2ab093cbd88e
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 http://ledseoul.com/userData/board/file/78062061792.pdf In PDF document text
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/pk534onpmei87mb90bvi4vr62i/15442604570.pdfIn PDF document text
    • https://istihdamhaberleri.com/upload/ckfinder/files/36203981071.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609d31878ef1f---1298804765.pdfIn PDF document text
    • http://grafordexstudents.com/clients/0/05/05b3dbe7dd9dc6f92b523d2b721f2ffd/File/2041947694.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/30103023270.pdfIn PDF document text
    • http://omonetach.pl/foto/ilustracje/file/21066143244.pdfIn PDF document text
    • http://longarmquiltacademy.com/fckeditor/userfiles/file/jilub.pdfIn PDF document text
    • http://perfekttorun.pl/pliki/zifubeda.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b015083816---rutezusoritalokeviwa.pdfIn PDF document text
    • https://usssecuritate.ro/userfiles/file/21883445276.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b91f6d7a29---99595138749.pdfIn PDF document text
    • http://bannhuaduong.net/upload/files/sivan.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/bepomse7872l6t6nca3p7fg513/55898210522.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aea69516568---kiseguvewavurekam.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/4ni7501svsa901vqcfuuncn6o7/rivap.pdfIn PDF document text
    • http://coffee33.ru/archive/file/jakaxesadivukedemavuvo.pdfIn PDF document text
    • https://xn--faade-zra.ch/ckfinder/userfiles/files/13914520344.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160855e8e378e3---47974395451.pdfIn PDF document text
    • https://cosmopolitanhotel.eu/uploads/wysiwyg/files/67370302142.pdfIn PDF document text
    • https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/lemumijo.pdfIn PDF document text
    • https://electrodomesticaruano.com/images/ckfinder/files/45807901473.pdfIn PDF document text
    • http://anhopphat.com/uploads/files/pesixufukinipegeromaxe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=management+information+system+interview+questions+and+answers+pdfPDF 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_off0000f75c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF75C 11300 bytes
SHA-256: 3981cd4bfa7ba1472c5d8e63786c50b5bbd7764a66dd25d31cfed757b6f81a0f
font_01_sfnt_off00011174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11174 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12986 17516 bytes
SHA-256: b23c1044f9bf23986e50e7683348f04b8c8aa31e6d4da7b011ccffd8c4ca0340