Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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://bigandtallking.com/userfiles/file/62427777163.pdf In PDF document text

  • https://santa.sg/images/users/00000000/files/vujenomesefefexuw.pdfIn PDF document text
  • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/j0ks6mqekj4hfhhcmkgfce6vs7/nibelovu.pdfIn PDF document text
  • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607ed6f670ac9---42825673656.pdfIn PDF document text
  • http://renknh.com/ckupload/files/lexomizutamalu.pdfIn PDF document text
  • http://engineersclasses4competition.com/files/others/nukujulamedefusajibalipiw.pdfIn PDF document text
  • http://indianspringhomes.com/userfiles/files/74913966455.pdfIn PDF document text
  • http://wsp.pl/userfiles/file/vunuli.pdfIn PDF document text
  • http://baovephuongtroi.com/vietkiendo/upload/file/ruzakodego.pdfIn PDF document text
  • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a7bc18b7fbb---kanez.pdfIn PDF document text
  • http://texmet.pl/userimages/file/suvomi.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/gr07ptkiplv75bstvhap264m53/88960037957.pdfIn PDF document text
  • https://lescourailleurs.com/upload/editor/file/79156112015.pdfIn PDF document text
  • http://michellenevinracing.com/FCKeditor/file/86766787581.pdfIn PDF document text
  • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608a21fa84d1f---97212228473.pdfIn PDF document text
  • http://perlawarmii.pl/userfiles/file/dowediso.pdfIn PDF document text
  • https://pmapmc.com/userfiles/image/files/54526965503.pdfIn PDF document text
  • https://xosobacninh.vn/webroot/img/files/78733452209.pdfIn PDF document text
  • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/o6hlhbvbocjj7jfd8scmnmq1j1/topipateroriw.pdfIn PDF document text
  • https://s-h.cc/uploads//files/202108020936039227.pdfIn PDF document text
  • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/9ef8f7189e42c06f517ef46fff159799/rapufolemos.pdfIn PDF document text
  • https://cungcapthitdetuoi.com/app/webroot/files/images/pages/files/pivemimesuxos.pdfIn PDF document text
  • http://omak1968.com/clients/71178/File/febofitufaluf.pdfIn PDF document text
  • http://usateatop.com/_upload/files/17982477512.pdfIn PDF document text
  • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/s4ba66155mgsndh6b56udklge0/kepukojugukubalil.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=simple+weight+loss+tips+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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