Malicious PDF — malware analysis report

Static analysis result for SHA-256 af28d9088167f38e…

MALICIOUS

PDF

683.9 KB Created: 2022-02-03 21:29:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 27d04721400ef98bd6fc67948895f628 SHA-1: 7ff0c38d70968c291db368304dd79dfe7eca96f5 SHA-256: af28d9088167f38e8234d73a0aba8a87c3dbab0b31901a02caecf3eb1cb49987
136 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.1976

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://yoyep.co.za/XSRYdR1H?utm_term=freelance+marketplace+website+template+free PDF link annotation
    • http://jeanchapleau.com/userfiles/file/noragitoranevepexad.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/2838bc39d899b048a12ec6ac04e6733c/wifibuzonodujojika.pdfIn PDF document text
    • http://danieldesignpro.com/userfiles/43014013518.pdfIn PDF document text
    • http://askort.pl/Upload/file/25412953337.pdfIn PDF document text
    • https://earthchallenge.be/sites/default/imageuser/file/3381706691.pdfIn PDF document text
    • https://pgprojekt.pl/Upload/file/sabinuxaja.pdfIn PDF document text
    • http://way-of-spirit.ru/upload/file/84602438440.pdfIn PDF document text
    • http://portalinmobiliario24.com/uploades/fckeditorfile/vizalita.pdfIn PDF document text
    • http://citlak.de/admin/UserFiles/file/rogufolojux.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/8pc95i701qntt7fcgno7om6i4h/31901403643.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f0291fb60ba---binudape.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161bc82913d2b0---fonezupedixifopa.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1612b8f9da9e8c---15878773870.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161a8e552f3128---wipizalokuzabobo.pdfIn PDF document text
    • https://www.wappa.com.au/siteadmin/ckfinder/userfiles/files/88134277388.pdfIn PDF document text
    • https://taipeitccia.org/CKEdit/upload/files/wexiturazobamit.pdfIn PDF document text
    • http://jagodkaprzedszkole.pl/userfiles/file/xedixafofapi.pdfIn PDF document text
    • http://dga.gr/ILC/img/file/sirunumobenuveritixeg.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/161f448ba56132---zutofidemisopaluvati.pdfIn PDF document text
    • http://brunagabriele.it/userfiles/files/ratazefozovijumalatofowa.pdfIn PDF document text
    • https://rougezenekar.hu/files/file/viwegosedizuvovevilis.pdfIn PDF document text
    • http://anais.terminarz.online/kosmetyczka/krakow/files/36011224480.pdfIn PDF document text
    • http://polskienarty.pl/data/aktualnosci_imgs/file/xeteruvadanaborotugaxi.pdfIn PDF document text
    • http://araulmor.tel-cor.com/images/library/file/vidusirixetukajivubezivo.pdfIn PDF document text
    • https://paardenwelzijnscheck.nl/app/webroot/files/ckeditor_files/files/49181243134.pdfIn PDF document text
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/161251bfcd78f8---morotewuj.pdfIn PDF document text
    • http://birizgardenhotel.com/userfiles/file/genunakivige.pdfIn PDF document text
    • https://makanbanyak.net/contents//files/valusovulajevonazivubo.pdfIn PDF document text
    • http://tunglamgarden.com/images/fck/file/34341266194.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c931bce2d59---9247447167.pdfIn PDF document text
    • https://office-agglo-larochelle.fr/userfiles/file/minimoxalonibutewajo.pdfIn PDF document text
    • http://bortran.com/upload/image/file/20211230030730.pdfIn PDF document text
    • https://moruslondinium.org/img/files/kujikalofevolitub.pdfIn PDF document text
    • http://infoegrafica.com/userfiles/files/56435123826.pdfIn PDF document text
    • http://elektromig.pl/userfiles/file/28264583307.pdfIn PDF document text
    • https://proia.bg/userfiles/file/19447677371.pdfIn PDF document text
    • https://purmoradiatoriai.lt/images/files/letepamubezewegisitam.pdfIn PDF document text
    • http://mofald-clpiu.gov.np/public/kcfinder/upload/files/juvamisimutusagalu.pdfIn PDF document text
    • https://macauroommate.com/ckfinder/userfiles/files/metavipafubu.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_off000a4157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4157 17168 bytes
SHA-256: 448944796e8f1e0391eb0422d8fa9c5252e1784b3f8d33e3a0ade5828fff5a4c
font_01_sfnt_off000a6e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6E1E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000a8547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8547 10816 bytes
SHA-256: 786bb3db43d1b0a1fe0f5960469448bc9a24ae95d9fde56f5cb50267cb7f5ceb