Malicious PDF — malware analysis report

Static analysis result for SHA-256 78255d86ecb8fc5b…

MALICIOUS

PDF

396.0 KB Created: 2022-03-02 05:16:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: eeb73d7758332b00c76b613cea67cb78 SHA-1: d08dee2ed0abd5d45491536b7db3a77be86763f3 SHA-256: 78255d86ecb8fc5b1d10d5e7761686677a7e9713219388bbbf43214b41aaa57b
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5598

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.
  • 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://mifuj.co.za/XSRYdR1H?utm_term=binomial+system+of+classification+worksheet PDF link annotation
    • http://markasib.ru/ckfinder/userfiles/files/sugabuzonebixijuwo.pdfIn PDF document text
    • https://octvads.site/js/ckfinder/userfiles/files/fozituvutizi.pdfIn PDF document text
    • http://the100voicesofgospel.de/fichiers/newsletter/file/buvozudedere.pdfIn PDF document text
    • http://3gr-group-com.gbintl.com/ci/userfiles/files/3617648785.pdfIn PDF document text
    • http://yameitecl.com/ckfinder/userfiles/files/20220219_035726.pdfIn PDF document text
    • http://weddingfavoursfor.co.uk/kcfinder/upload/files/pirudatabegun.pdfIn PDF document text
    • https://godahoian.com/app/webroot/upload/files/82400437444.pdfIn PDF document text
    • http://reversetheclocknow.com/ckfinder/userfiles/files/86597162523.pdfIn PDF document text
    • http://www.samuitns.com/image/upload/File/13946174261.pdfIn PDF document text
    • https://sakura-bashi.com/uploads/files/202202160723545391.pdfIn PDF document text
    • https://tfsroanoke.com/home/tfs/public_html/new/ckfinder/userfiles/files/sutofiwigukifarisuruditu.pdfIn PDF document text
    • http://alpes-maritimes.proximeo.com/ckfinder/userfiles/files/pezoludotarejenawepapa.pdfIn PDF document text
    • http://phongkhamthienhoa.org/images/files/96719587096.pdfIn PDF document text
    • https://gulecbakliyat.com/panel/kcfinder/files/46779559882.pdfIn PDF document text
    • https://jyapa.com/jhuoyue/uploadfiles/bebabamabugo.pdfIn PDF document text
    • https://grootformaatspandoeken.nl/userfiles/file/tivozelodeja.pdfIn PDF document text
    • https://predial-rua-nova.pt/056-CovadaLua/images-editor/file/52861825085.pdfIn PDF document text
    • https://akanaymatbaa.com/calisma2/files/uploads/jazozotixusirunu.pdfIn PDF document text
    • https://www.nutfruit.org/js/admin/ckeditor/plugins/kcfinder/upload/files/davowuvugotigosutaje.pdfIn PDF document text
    • https://southernwashpros.com/nbloom/fckuploads/file/17891206944.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f86167cb85a---7219431922.pdfIn PDF document text
    • http://mweb.cz/images/file/734393070.pdfIn PDF document text
    • http://businessnavigator.in/ckeditor/uploads/files/80010252582.pdfIn PDF document text
    • http://duquenne-moteurs.fr/webroot/upload/files/75624675173.pdfIn PDF document text
    • http://advocaatindex.nl/images/uploads/46375263958.pdfIn PDF document text
    • http://www.memoriahistoricamalaga.org/ckfinder/userfiles/files/dipunatepulolebagopaf.pdfIn PDF document text
    • http://shipsupply.ru/userfiles/files/rofekejogepokemivexugik.pdfIn PDF document text
    • http://melvin.cz/data/26474815410.pdfIn PDF document text
    • https://mamalight.net/business_school/uploads/file/99187023994.pdfIn PDF document text
    • http://teppich-bayat.de/kcfinder/upload/files/20272761141.pdfIn PDF document text
    • https://lemondedelaura.com/userfiles/file/70950300411.pdfIn PDF document text
    • http://dothimau.vn/kcfinder/upload/files/41439156470.pdfIn PDF document text
    • http://www.dispatchls.com/backend/web/kcfinder/upload/files/3736739535.pdfIn PDF document text
    • http://foreverymuslim.net/home1/forevev3/public_html/foreverymuslim/upload/file/24072918212.pdfIn PDF document text
    • http://csc010.com/userfiles/file/20220213211233_ixjhg2.pdfIn PDF document text
    • http://kirpichi.su/kcfinder/upload/files/52731090885.pdfIn PDF document text
    • http://cuacuongiare.vn/upload/files/95660052124.pdfIn PDF document text
    • http://rezervacie.ambio.sk/user_files/files/newopikiduz.pdfIn PDF document text
    • http://www.thaiticketmajor.com/static/imgUpload/files/serid.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_off0005be84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE84 18472 bytes
SHA-256: 43546eb6447c61b562e4fd2772e481c252fe9ad9877a36cfc21f3c280796e074
font_01_sfnt_off0005eec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEC9 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000605eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x605EB 10944 bytes
SHA-256: 52442742ed9c62119ee9b8f127f69d04897d0f84b05efdca1c0263ca1778ac3c