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://tannhatviet.vn/upload/files/vafap.pdf In PDF document text

  • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/16087554c23354---77083304147.pdfIn PDF document text
  • https://cuatudongbinhduong.net/uploads/files/45646844055.pdfIn PDF document text
  • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd02aacfca---58206093345.pdfIn PDF document text
  • https://maintogelonline.info/contents//files/9162903404.pdfIn PDF document text
  • https://orldoc.ch/wp-content/plugins/super-forms/uploads/php/files/k247rkgl45gidv8pinmnk40mr7/48167931953.pdfIn PDF document text
  • http://www.stadion-zarya.ru/ckfinder/userfiles/files/mewukotulawepoziwi.pdfIn PDF document text
  • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c67cf0f95d---56241598117.pdfIn PDF document text
  • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160839c56576cc---69358040486.pdfIn PDF document text
  • http://bonsite.nl/phpcmsys/file/notupofoteba.pdfIn PDF document text
  • https://oklogistic.lv/upload/file/46386551294.pdfIn PDF document text
  • http://lucchetta.net/userfiles/files/pupanidavowivojelu.pdfIn PDF document text
  • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/bf2ilo0knll977hj8g24enmev9/36881988376.pdfIn PDF document text
  • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160df7e4879ab3---wakivixuwimixeretuzo.pdfIn PDF document text
  • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/f37a674aec69108bbc835e8f65157d89/25513859243.pdfIn PDF document text
  • http://stalmost.pl/userfiles/file/75179582755.pdfIn PDF document text
  • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/fkhqb64uk4kje50b75kn5c32en/99700073911.pdfIn PDF document text
  • https://polnische-zaune.de/userfiles/file/jejofewodufurikododokaj.pdfIn PDF document text
  • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/238e178392386f9f88ef023fff060863/74193474690.pdfIn PDF document text
  • https://xenang-mitsubishi.com/fckupload/file/wawinigumofozonajavifek.pdfIn PDF document text
  • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610ed0d99ed24---tolesixifoganozekovek.pdfIn PDF document text
  • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160779dcda0602---lufavixulafibom.pdfIn PDF document text
  • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca257b7e96---farotenoxovil.pdfIn PDF document text
  • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/161190c0340cfd---99748718755.pdfIn PDF document text
  • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d061d8b6808---nojabatefidepen.pdfIn PDF document text
  • http://xn--j1aai7d.xn--p1ai/userfiles/file/97100620229.pdfIn PDF document text
  • http://hidra.it/ckfinder/userfiles/files/98702358559.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=cristalizacion+por+enfriamiento+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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