Malicious PDF — malware analysis report

Heuristics 6

• 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 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://auf.vn/wp-content/plugins/super-forms/uploads/php/files/5e3n5q8cuqajpb33m8iethhcs7/62604344014.pdf In PDF document text

  • http://pincailight.com/zk/UploadFile/file/2021080512462973499.pdfIn PDF document text
  • https://nabsangram.com/userfiles/file/63205327333.pdfIn PDF document text
  • http://chinalabware.net/d/files/depemuluwamuko.pdfIn PDF document text
  • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bbf701d3c3---rodoputekeduzitopug.pdfIn PDF document text
  • https://dorfadvertising.com/ckfinder/userfiles/files/duxuwezokareb.pdfIn PDF document text
  • http://valdhans.cz/userfiles/file/24572825288.pdfIn PDF document text
  • https://drbumbnursinghome.in/ckfinder/userfiles/files/fiberidi.pdfIn PDF document text
  • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160872c305a304---24407709911.pdfIn PDF document text
  • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/gralr6pbdrlb0fdk50gvkluqh6/sonenaliv.pdfIn PDF document text
  • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a0db8d4d0d6---87730495144.pdfIn PDF document text
  • http://nadiadsa.org/userfiles/file/tuxokirev.pdfIn PDF document text
  • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdd52d4194---96958818722.pdfIn PDF document text
  • http://sinoscaform.com/upload/ckimg/files/202108052125139622.pdfIn PDF document text
  • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077d0325abb9---84546056954.pdfIn PDF document text
  • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160e382140b909---divirusivu.pdfIn PDF document text
  • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071f985bfb51---37897376251.pdfIn PDF document text
  • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/9ae4cd046fe86be16d7acc1428cff25e/86359371323.pdfIn PDF document text
  • http://sghscsjamarai.org/guruhargobind/userfiles/file/dimagi.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b53de56162c---benoxevedisaxaderojul.pdfIn PDF document text
  • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/ot4mee164ss1ulp441vfcu99k4/31505018438.pdfIn PDF document text
  • https://muzeumkonstancina.pl/attachments/file/jejupagugoritowuvoxow.pdfIn PDF document text
  • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccb40c74a4---80437728741.pdfIn PDF document text
  • http://irk-yoga.ru/upload/files/63478341614.pdfIn PDF document text
  • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160709557b7614---79517163985.pdfIn PDF document text
  • https://landtop.com/filespath/files/20210817141516.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=waveguide+basics+pdfPDF 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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