Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d825f2767bcf882…

MALICIOUS

PDF

77.7 KB Created: 2021-09-14 13:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 84603b83a056df0f23a84c725b5b762d SHA-1: b3e3eed0813a51a565f038fb3349da047bfbd983 SHA-256: 5d825f2767bcf882f2a53ab49015a6994c858f48aff4e02ffc94beaf7ae5face
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 7

  • 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.
  • 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://frisch.ro/files/file/67452625199.pdf In PDF document text
    • https://jck.ro/userfiles/file/zofabozaxobamuxizesig.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/16139d9f3cc094---togiwijerumomov.pdfIn PDF document text
    • https://lecachet.fr/docs/files/faradanajuvebetitezota.pdfIn PDF document text
    • https://kujainspectors.com/candyticket/uploads/page_images/files/23504753841.pdfIn PDF document text
    • http://tw-sincere.com/upfiles/editor/files/wabux.pdfIn PDF document text
    • https://dermatologie-chamonix.com/userfiles/file/xalazosoxik.pdfIn PDF document text
    • http://alacarte-design.de/userfiles/file/89890620438.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/16133e085ea609---zulexanuzef.pdfIn PDF document text
    • http://leadingedgecorporate.com/user_images/file/ziretujesajeb.pdfIn PDF document text
    • http://xinshifm.com/userfiles/file/69252115634.pdfIn PDF document text
    • https://jvlegacyhomerepairsmd.com/nbloom/fckuploads/file/fomazoweluwokewidusafeto.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/3480d7eba6c94a1ef3133530070e4c10/75011411062.pdfIn PDF document text
    • http://mvsexpo.ru/admin/ckfinder/userfiles/files/65222590451.pdfIn PDF document text
    • http://sinice-rasy.cz/files/file/buwajigitimanared.pdfIn PDF document text
    • https://praktijkbinnenstad.nl/file/sisedujerogenenawawa.pdfIn PDF document text
    • http://s4l.vn/storage/ckfinder/files/66697603652.pdfIn PDF document text
    • http://akifkasaboglu.com/esatfisek/images_upload/files/40673192909.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/f89c888d76054464ee658fa6981ef639/40169103591.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/db9hkerfpqva5bks4sqmoljll0/fototudogode.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613db0d863b49---xawumuzosopotipuwivew.pdfIn PDF document text
    • http://tanabuauto.com/js/upload/files/30779077465.pdfIn PDF document text
    • http://fsoa.cn/userfiles/file/dabuzukowuvarigi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=stream+john+wick+3PDF 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_off0000c7c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7C4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dfdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDB 10836 bytes
SHA-256: ada412e24aa232a5c537f57dc0c2bd7190df115c263baf5d6220f33748d3bc2f
font_02_sfnt_off0000f8c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C1 18784 bytes
SHA-256: 58b566d38218dd9676c9b26e22617ea607f9ea1f215f11fde9aab3bcf1da2172