Malicious PDF — malware analysis report

Static analysis result for SHA-256 875d304cbf2dcb76…

MALICIOUS

PDF

373.0 KB Created: 2022-03-15 17:55:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: 5709953da27cf691c4ea0288a88f33e3 SHA-1: 30496fc1b1cabf1bbd46993ce1bbbbfd868d1f12 SHA-256: 875d304cbf2dcb764503dd8c18a187b8bee9f49b8d04527187a8aee99f9cc879
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6197

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 https://podar.co.za/XSRYdR1H?utm_term=bikaner+university+private+form+last+date PDF link annotation
    • http://year-c.com/upload_fck/file/2022-2-6/20220206094846999796.pdfIn PDF document text
    • https://leo.tw/upload/ckeditor/files/padizujun.pdfIn PDF document text
    • http://associazionemillesogni.it/userfiles/files/21880234988.pdfIn PDF document text
    • http://www.chestheart.org/assets/ckeditor/kcfinder/upload/files/47940834922.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/h62gpq2oe84qh9e64m19npjncm/33325631087.pdfIn PDF document text
    • https://georeno.ca/userfiles/files/bowofemogapitogikubuzemi.pdfIn PDF document text
    • http://gibisch.org/files/files/turonupuw.pdfIn PDF document text
    • http://stjohnslab.com/kcfinder/upload/files/buluzobumikolotinogamefa.pdfIn PDF document text
    • http://elt-tm.uz/kcfinder/upload/files/23946621505.pdfIn PDF document text
    • https://samsungvrvklima.com/upload/ckfinder/files/64163798944.pdfIn PDF document text
    • http://mytenniscoach.net/admin/ckeditor/kcfinder/upload/files/xedifure.pdfIn PDF document text
    • http://etecpresidentevenceslau.com.br/kcfinder/upload/files/5421341778.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fcb39405fbc---gumadukat.pdfIn PDF document text
    • http://snbh.imadiff.net/kcfinder/upload/files/gafumuruvobeduroxezaxon.pdfIn PDF document text
    • http://kinel-hunter.ru/upfiles/file/bawesikulamozomenutuku.pdfIn PDF document text
    • http://zjgjqmr.com/v15/Upload/file/20222111813595056.pdfIn PDF document text
    • http://www.barrettmotors.com.au/templates/admin/js/kcfinder/upload/files/jixinab.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/161fd8c10bdd6d---24877208005.pdfIn PDF document text
    • http://xn----dtbsgbucafmmaf.xn--p1ai/servimages/editor/files/marotepabulux.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/puxelajovoz.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/43553d0377d6a9ce2eec05548d6edee5/favidibojirokipufavive.pdfIn PDF document text
    • http://aal.tw/uploads/htmlupload/files/medigisaratuxariruwegiw.pdfIn PDF document text
    • http://autoscuolauniversale.it/userfiles/files/19265972348.pdfIn PDF document text
    • http://kesherisrael.com/uploadEditor/files/50738604152.pdfIn PDF document text
    • http://tangneylaw.com/admin/images/file/jujojab.pdfIn PDF document text
    • http://lahma.pl/_u/userfiles/file/gotabotosixozozemuven.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/d76e354c93e3376cad0bc0a7dafcb938/rudadewatemosuxojixoliroz.pdfIn PDF document text
    • https://pacie.vn/web/uploads/files/rikuwijitozinesowo.pdfIn PDF document text
    • https://serviceservice.eu/userfiles/file/65553957585.pdfIn PDF document text
    • http://dalycity.com/wysiwygfiles/file/muvujusivubosiker.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_off000559b0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000559b0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000559b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x559B0 11084 bytes
SHA-256: 706425094e222577962afad63c9c6dde0b9d8ce7037a09d2c58c1f233eb5324b
font_01_sfnt_off00057391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57391 21156 bytes
SHA-256: 9ee32763ff25d736a971f084c2da154b07b0b7d1ed75db0aae351b15f1e9f196
font_02_sfnt_off0005ab52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB52 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9