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 http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b13bd58dee1---71997328787.pdf In PDF document text

  • http://applecentervn.com/uploads/image/files/sewikejirupi.pdfIn PDF document text
  • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/1fded992e34e084dcefee691e61ca342/92698687565.pdfIn PDF document text
  • http://xn--90aoaidn.xn--p1ai/ckfinder/userfiles/files/79957864969.pdfIn PDF document text
  • http://nacyc.jp/Upload/file/29953614969.pdfIn PDF document text
  • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/049f4d2149699bac1e3bd45ceef32627/42421000023.pdfIn PDF document text
  • http://inbjnews.com/data/cheditor/0603/files/43455861656.pdfIn PDF document text
  • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a96abf1e3ad---sasukokogosam.pdfIn PDF document text
  • https://fid-data.fr/app/webroot/uploaderfiles/vekikixaze.pdfIn PDF document text
  • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdcdbf64b1c---91307993002.pdfIn PDF document text
  • http://gocreate.termall.pl/upload/fck/file/22704683028.pdfIn PDF document text
  • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608258337a91f---38689407349.pdfIn PDF document text
  • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/637a89da06cdee361b58c868f65c7ea1/39342935799.pdfIn PDF document text
  • http://eclickapps.in/userfiles/files/72905268791.pdfIn PDF document text
  • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160b64e09adc82---73911933199.pdfIn PDF document text
  • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/d12da0dd8ab9d38e676bc87de47fc9fd/famisatoz.pdfIn PDF document text
  • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/cb0otjlrh3d6klog6iiehobb06/lezevepez.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/160774705efd0f---21905422429.pdfIn PDF document text
  • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/vh4r4m1pa21djukd13koauhev1/72310350594.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=factors+of+20+and+24PDF 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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