Malicious PDF — malware analysis report

Heuristics 6

• 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://garglob.ru/uplcv?utm_term=psychological+capital+journal+pdf PDF link annotation

  • http://gtshotel.it/images/file/6845724847.pdfIn PDF document text
  • https://usssecuritate.ro/userfiles/file/34724849617.pdfIn PDF document text
  • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/v9rqfj0c5vjvbvj8o61c9lc40e/zutofulajelezumapikusefa.pdfIn PDF document text
  • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093b0d23560e---11016957417.pdfIn PDF document text
  • http://prefinancovaniehypoteky.sk/res/file/17648423967.pdfIn PDF document text
  • http://phrabat.net/UserFiles/File/fesidulifofoxupu.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073a6b1bf163---fozadilubigej.pdfIn PDF document text
  • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1610d745315a3f---81321878825.pdfIn PDF document text
  • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/bj0m7276g7u8pcg10l8si8rni0/bodagojekurujo.pdfIn PDF document text
  • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a67ddda16b8---29668317380.pdfIn PDF document text
  • http://1hozain.ru/files/userfiles/files/20143430545.pdfIn PDF document text
  • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16088efd6a809f---satigepemepukobiv.pdfIn PDF document text
  • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16110ed3be8d84---55113828136.pdfIn PDF document text
  • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/3cf4180a1af173cd0d5d1b7cfa694d31/mosafopopujomokigux.pdfIn PDF document text
  • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160acb3b5560bc---xumegujoxezefudukafelopaw.pdfIn PDF document text
  • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/db746f35d1e4ffda3a454e9155417ccf/23678186990.pdfIn PDF document text
  • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/62uvvvhjgidjolnc5hhrvo13vr/komamofekog.pdfIn PDF document text
  • https://yomadesign.com/userfiles/Proj_Name/files/62026898759.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/8rl0iqf50ks3h2vlms3j36san6/tadaxof.pdfIn PDF document text
  • http://zaiger.ru/img/file/10433551843.pdfIn PDF document text
  • http://nbnjl.com/userfiles/files/kugulapezereburefe.pdfIn PDF document text
  • http://zhuoxinlaw.com/userfiles/file/20210828000034_294709287.pdfIn PDF document text
  • https://open-call.fr/uploaded/files/nakipuwovuxux.pdfIn PDF document text
  • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0a5f54d9b---74855372273.pdfIn PDF document text
  • http://herningbadintra.dk/app/webroot/upload/files/20033667109.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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