Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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://nomylo.ru/uplcv?utm_term=nice+houses+bloxburg PDF link annotation

  • https://h16hr15k-h19hr37urn.com/contents/files/27346802869.pdfIn PDF document text
  • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140013d429d7---jajomagib.pdfIn PDF document text
  • https://habibitours.net/ckfinder/userfiles/files/52573774156.pdfIn PDF document text
  • http://karlsbach.de/userfiles/files/28334971787.pdfIn PDF document text
  • http://nfc-lampang.com/user_img/files/fuwosifibekatup.pdfIn PDF document text
  • https://globalybm.com/ckfinder/userfiles/files/1630604165.pdfIn PDF document text
  • https://lanhcongnghiepthinhphat.com/upload/files/jigokebuxuzesivuvewew.pdfIn PDF document text
  • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/7bd0641445349e05420139ef97bfcf2c/77876755252.pdfIn PDF document text
  • http://siamsankyo.com/Uploads/file/dejejulidibesomuzuru.pdfIn PDF document text
  • http://chekeeh.ir/basefile/chekeehir/files/vakurivimadupavo.pdfIn PDF document text
  • https://baxsporthorses.nl/userfiles/file/83335084085.pdfIn PDF document text
  • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fd216bf43b---46059685231.pdfIn PDF document text
  • https://onderhoudnlgarantie.nl/upload/file/kaximelesiwevemixefe.pdfIn PDF document text
  • https://staging-info.sharkovinkom.com/sharkovinkom.com/ckfinder/userfiles/files/59008568890.pdfIn PDF document text
  • http://eiak.org/upload/editor/files/7639498715.pdfIn PDF document text
  • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/74c3611f1f440a1d094ed1b71057a50a/28138700845.pdfIn PDF document text
  • https://moraure.net/js/ckfinder/userfiles/files/94707438422.pdfIn PDF document text
  • http://rspon.pl/images/wyswig_images/file/resinuwopevib.pdfIn PDF document text
  • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612feda03cd40---segerijipekobar.pdfIn PDF document text
  • http://ambulatorioveterinariovianello.eu/userfiles/files/74133394837.pdfIn PDF document text
  • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/d3c1a5034fef968cc2c1d9e96f5dada6/wadeketewepejimajetuxeku.pdfIn PDF document text
  • http://gamboeng.com/assets/ckfinder/userfiles/files/25198494682.pdfIn PDF document text
  • https://cargoservice.pl/cargoservice/userfiles/file/dotofoxefa.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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