Malicious PDF — malware analysis report

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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.
• 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://ketchas.ru/uplcv?utm_term=spanish+crash+course+pdf PDF link annotation

  • https://dhrc.in/userfiles/file/dokovorerizonaxelatuvaden.pdfIn PDF document text
  • https://rijst.nu/userfiles/file/72121357448.pdfIn PDF document text
  • http://ashole.hu/UserFiles/File/87191905360.pdfIn PDF document text
  • http://nhasachnguyenvancu.com/Images_upload/files/lugepijowufaker.pdfIn PDF document text
  • http://morebricks.com/ckfinder/userfiles/files/53055394935.pdfIn PDF document text
  • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/54f3ba94e65aa2b90e550eff6f8f8359/91940256425.pdfIn PDF document text
  • http://lifecare4all.com/upload/files/bofofonufulexagizek.pdfIn PDF document text
  • http://turatabor.hu/media/33344524458.pdfIn PDF document text
  • http://bukharasuwanee.com/sites/default/files/file/jofek.pdfIn PDF document text
  • http://petra-dario.info/upload/datoteke/rerujudelopoxavodugag.pdfIn PDF document text
  • http://thanhlapcongtykiengiang.com/upload/ck/files/pixitinaxul.pdfIn PDF document text
  • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/129db81c3b3ea6532d8f959ee5311f73/sifudafijesufavajulumap.pdfIn PDF document text
  • http://elosc.com/upFile/file///ITX202109011518259261.pdfIn PDF document text
  • http://cungcapbaoduongcuanhatban.com/upload/files/38505012706.pdfIn PDF document text
  • http://thekreativecompany.com/uploaded_files/userfiles/files/bexud.pdfIn PDF document text
  • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/51ac70b978c01fae39c7d71ee00b1732/80794317108.pdfIn PDF document text
  • http://adriennemason.com/assets/files/95879641019.pdfIn PDF document text
  • https://demircanticaret.com/userfiles/file/12546207183.pdfIn PDF document text
  • https://badrivishal.com/media/peberidotira.pdfIn PDF document text
  • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/161406660b9b8f---maxaxetugizil.pdfIn PDF document text
  • http://ambulatorioveterinariocigliano.com/userfiles/files/78747710490.pdfIn PDF document text
  • http://studiomedicoveterinariobellucci.eu/userfiles/files/wopiwefakogajimuw.pdfIn PDF document text
  • http://silarperu.com/UserFiles/file/86111119532.pdfIn PDF document text
  • http://indcms.testingmachines.com/images/file/loxibenav.pdfIn PDF document text
  • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16138b15a09c2d---27439545785.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

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