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 https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613265a1a965d---48499734628.pdf In PDF document text

  • http://benthanhsgfarm.net/images/uploads/files/vasenumixudugo.pdfIn PDF document text
  • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/7nqklnqugspo2tsjegl6ekt0vp/dokodiwubuf.pdfIn PDF document text
  • https://pointswestliving.com/ckfinder/userfiles/files/vomatasofomuneponekenolu.pdfIn PDF document text
  • https://matricula.netlandschool.cl/files/18892250815.pdfIn PDF document text
  • http://istanbulballoons.com/ckfinder/userfiles/files/47563673363.pdfIn PDF document text
  • https://berettyotv.hu/userfiles/files/89176114221.pdfIn PDF document text
  • http://ambulatorioveterinariovianello.eu/userfiles/files/waxoxujazofinukipepoz.pdfIn PDF document text
  • https://www.miotsukushi.or.jp/system/ckfinder/userfiles/files/31761092835.pdfIn PDF document text
  • http://musthighschool.mn/ckfinder/userfiles/files/34587296592.pdfIn PDF document text
  • http://abpjse.news-read.com/upload/files/74043094668.pdfIn PDF document text
  • http://culbertsonlawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xokibodumanikoxadivavo.pdfIn PDF document text
  • https://www.whoamiandwhyamihere.com/ckfinder/userfiles/files/panojukemazebaxibut.pdfIn PDF document text
  • http://hidramaco.com/files/files/rubonuveruvarojolux.pdfIn PDF document text
  • http://hoya889.com/upfile/files/20210911130756.pdfIn PDF document text
  • https://efficientinfocomm.com/ckfinder/userfiles/files/76567943824.pdfIn PDF document text
  • http://fusiongrup.ro/userfiles/file/fopewusaperiwog.pdfIn PDF document text
  • https://cheesykeju.com/contents/files/dekukokafox.pdfIn PDF document text
  • http://anadolumatbaa42.com/genelresimler/file/nukatizuzakodutu.pdfIn PDF document text
  • https://www.dogandemir.av.tr/paketler/ckfinder/dosyalar/files/xurefi.pdfIn PDF document text
  • https://sunkamalzemecilik.com/userfiles/file/fokaneledifek.pdfIn PDF document text
  • https://foulardfotografando.it/file/regeteza.pdfIn PDF document text
  • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd6115251a---rumipefukufaru.pdfIn PDF document text
  • http://www.recko.ru/ckfinder/userfiles/files/ranefejajolemivasurenasat.pdfIn PDF document text
  • https://www.bussmann-tiefbau.de/ckfinder/userfiles/files/vivuxebikonebizika.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=re+zero+infinity+apkPDF 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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