Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c681abd67e9bc78…

MALICIOUS

PDF

448.6 KB Created: 2022-03-03 14:31:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-06
MD5: 203ab9dd427cdd11bf4a058add41c94a SHA-1: dc5b1c59c989bc70272d584d01c9209c9bdb4495 SHA-256: 6c681abd67e9bc78c1b232b8463b4d60dddf92e402a58170cfc49022654af602
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4999

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://brenderup.ro/mm/file/67631950645.pdf In PDF document text
    • http://captaincook.hu/userfiles/file/mokujibatabajevutiko.pdfIn PDF document text
    • https://phatgiaolongan.com/upload/ckupload/files/15086073396.pdfIn PDF document text
    • http://unitekinfostructures.com/userfiles/file/98499968872.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620a0992aa50e---tufatukunas.pdfIn PDF document text
    • http://gartenmessebau.de/uploads/files/16775975892.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1621e7947a8d55---50608439723.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/16205fc3b8cdc5---lazufatuxuvomexidijezolib.pdfIn PDF document text
    • http://trinitysportsandleisure.ie/userfiles/file/luxorenewabedi.pdfIn PDF document text
    • http://ifaistos.reality.gr/~triantaf/images/file/dozepesu.pdfIn PDF document text
    • https://xlspandoek.nl/userfiles/file/32072026083.pdfIn PDF document text
    • http://xn--djr00fsyfv0o5qgy9u.com/filespath/files/20220303101708.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/rijudotimalexo.pdfIn PDF document text
    • http://www.forsheda.se/admin/kcfinder/upload/files/86267570287.pdfIn PDF document text
    • http://sentidoseg.com/resources/original/file/31738986093.pdfIn PDF document text
    • http://strojsteel.cz/webpagebuilder/ckfinder/userfiles/files/mamitisunoxa.pdfIn PDF document text
    • https://momsgardenfoods.com/ckfinder/userfiles/files/80553259481.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1620e7d35813e4---datasuwizi.pdfIn PDF document text
    • http://masan315.net/board/imagefile/file/tejekajojivanoroj.pdfIn PDF document text
    • http://www.superprzygoda.pl/galeria/files/digadulopoboxa.pdfIn PDF document text
    • http://www.klub112.cz/upload/files/ligotixifilonogunifiboxo.pdfIn PDF document text
    • http://cochemical.com/upload/files/milolarixif.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f8efbcb9859---97612720647.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/5986e5774d1f7b0389821663e2b26b5f/48134120127.pdfIn PDF document text
    • http://dasbluemchen.com/nifilurux.pdfIn PDF document text
    • http://phuctuong.vn/images/files/peroxitavipuxunetujuzos.pdfIn PDF document text
    • http://managhantasala.net/mailuserfiles/file/71883423669.pdfIn PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/d5db43bdb024e86b2a4e7d22639bb5c9/mipijupisesumo.pdfIn PDF document text
    • https://familienbilstrup.dk/userfiles/file/morojujevu.pdfIn PDF document text
    • http://hydrem.ru/images/file/28656603691.pdfIn PDF document text
    • http://defendo.hu/admin/kcfinder/upload/files/55215615728.pdfIn PDF document text
    • https://www.globalportsholding.co.uk/ckeditor/kcfinder/upload/files/57180146261.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=arrange+pdf+pages+onlinePDF link annotation
    • https://www.drukwerkmax.nl/public/admin/assets/global/plugins/kcfinder/upload/files/xutasudaxamuzejetakiwunab.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 extracted file (font_00_sfnt_off000693f2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000693f2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000693f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x693F2 18160 bytes
SHA-256: f827beffd7ea69f0e3ad61a8142974f4ee8ba1514a52a04fbd91dcf9d748cb26
font_01_sfnt_off0006c38b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C38B 10556 bytes
SHA-256: 1d3b92b250a1767694394a1ae1acea5592f2c93f31ab8997bfbc8c125bddfc73
font_02_sfnt_off0006db72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB72 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9