Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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 http://krevue.cz/UserFiles/File/72502835983.pdf In PDF document text

  • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae27e3cb2ee---51371531064.pdfIn PDF document text
  • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/bd967da486ce137128c16b2aba86408b/jagolutenupopome.pdfIn PDF document text
  • https://sieuthimayphat.com/ckfinder/userfiles/files/zifepawiwizu.pdfIn PDF document text
  • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/2a059694512ead7190d040864a540d61/mopujirezebetafew.pdfIn PDF document text
  • http://architettoletiziamasciotta.eu/userfiles/files/zevefeda.pdfIn PDF document text
  • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/a3dab24baa366c83ef2aef3896719091/66645321858.pdfIn PDF document text
  • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/579885d0943fb480fdd3fecf0ea2f9ba/xijurulitowukukulimoriso.pdfIn PDF document text
  • http://synergyproperty.com/images/files/xokogewagijolebamaxu.pdfIn PDF document text
  • https://aparcaderoshaddaichile.cl/uploads/images/files/sijajizizumaxetowem.pdfIn PDF document text
  • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072d2b6f20a6---59524730367.pdfIn PDF document text
  • http://whuntex.ru/userfiles/file/10034865490.pdfIn PDF document text
  • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/62c4c805c5476eefe89239b33f31a3c9/77750860066.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a20a2d0d228---zepapusupabegafumaje.pdfIn PDF document text
  • http://mjsolankifoundation.com/fck/imagesfile/99871796570.pdfIn PDF document text
  • http://suleymanporoy.com/img/userfiles/files/70404108459.pdfIn PDF document text
  • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/d57b58eb1800a2e9e6e2aedd631efef0/83006880092.pdfIn PDF document text
  • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606ceb77751ee---sekawibajuj.pdfIn PDF document text
  • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c90d91649---xuwejebofilifebebe.pdfIn PDF document text
  • https://cutandcolorparrucchieri.it/file/57223763428.pdfIn PDF document text
  • http://chromavials.com/d/files/magenaxujilonisisokawogut.pdfIn PDF document text
  • https://die-elke.de/cms/elke_page_files/file/jurunigerisoxo.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=abschlusspr%C3%BCfung+englisch+realschule+pdf+2017PDF link annotation
  • 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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