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 https://garglob.ru/uplcv?utm_term=livros+publicidade+e+propaganda+pdf PDF link annotation

  • http://www.corazondelsol.es/ckfinder/userfiles/files/bugaruxobizoxezubepu.pdfIn PDF document text
  • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/a1365acaedfdcb84591e43e5b60ea44b/39318580780.pdfIn PDF document text
  • http://www.recko.ru/ckfinder/userfiles/files/67085684708.pdfIn PDF document text
  • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/8gl2jq4tj80g3f8tagrq2pp03t/sejufupowez.pdfIn PDF document text
  • https://wietsevoermans.nl/ckfinder/userfiles/files/resemamidu.pdfIn PDF document text
  • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/6454a46d509194f400c432ce3bb0c554/75770121799.pdfIn PDF document text
  • http://fd-health.com/upload/ckeditor/files/zebomikapekisiwan.pdfIn PDF document text
  • http://texinpack.com/uploadfile/file///2021081805572862.pdfIn PDF document text
  • http://mastrodibaglio.it/userfiles/files/kadoparukadewegu.pdfIn PDF document text
  • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160ac0ec9bbf67---xobekar.pdfIn PDF document text
  • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081a5df69207---gonujogike.pdfIn PDF document text
  • http://poaglasses.com/uploads//files/202108110350597273.pdfIn PDF document text
  • http://chieusangducphat.com/uploads/userfiles/file/xebagufigagosojinaruwu.pdfIn PDF document text
  • http://donauwell.at/userfiles/file/44261216583.pdfIn PDF document text
  • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/92mm26q76j8hjfsp9mvdsgt4cf/xidukepek.pdfIn PDF document text
  • https://ka-base.no/images_content/file/rakigurewodolibunuxuz.pdfIn PDF document text
  • http://totaldeliverancecathedralchurch.com/clients/2/22/22dae496a1749ae881e6bee195142b05/File/tojogirafijuzerivivuwit.pdfIn PDF document text
  • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160796ec02a7f4---165125638.pdfIn PDF document text
  • https://corpeverest.com/ckfinder/userfiles/files/kiposibukojadisimeze.pdfIn PDF document text
  • https://oteaexpert.fr/cite_imgs/file/96678433276.pdfIn PDF document text
  • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160826910507c4---wutipejefozibike.pdfIn PDF document text
  • http://www.siscbolivia.com/admin/uploaded/fck/file/63522254931.pdfIn PDF document text
  • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/1003f4e6dbb9132c9729b00800d433a2/kasawigogibobalexukuv.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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