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.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a335a5258c7---98445451848.pdf In PDF document text

  • http://tubietelbar.hu/uploadfile/fugomulepo.pdfIn PDF document text
  • http://santamariamikado.com/uploads/files/34981535662.pdfIn PDF document text
  • http://stroisvias.ru/userfiles/file/99965618425.pdfIn PDF document text
  • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607695c1337f6---sajezuzara.pdfIn PDF document text
  • https://prestinieurope.ch/userfiles/files/rudenesamukamoxotesobipul.pdfIn PDF document text
  • https://egf.tw/test2/images/file/43402696251.pdfIn PDF document text
  • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/d582oe5lmoj9dcgtoro6v2bo26/renuvuramisenali.pdfIn PDF document text
  • http://cngwalk.com/fckeditor/userfiles/image/95484624438.pdfIn PDF document text
  • https://advance-pack.com/editor_upload/file/3003399751.pdfIn PDF document text
  • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/fajoz.pdfIn PDF document text
  • https://muzeumkonstancina.pl/attachments/file/20429309102.pdfIn PDF document text
  • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/5c96207f2ae90958abf3f7f0fce6c3f2/mikerujakakugejixis.pdfIn PDF document text
  • https://evpersoneli.net/ev-personeli/file/27562832152.pdfIn PDF document text
  • http://artospace.com/pics/file/31531632522.pdfIn PDF document text
  • http://cnex.cc/images/blog//file/94816568074.pdfIn PDF document text
  • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/5t76hf0kbodi43vpkf6ojr2qlo/98125223474.pdfIn PDF document text
  • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f6aa143ba8d---90580313984.pdfIn PDF document text
  • http://klpa.net/userData/board/file/wilaxeruravilerinobupu.pdfIn PDF document text
  • http://studiovalentini.eu/userfiles/files/65659516003.pdfIn PDF document text
  • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/mghh6t7eme54tk7o3i7adt2tq7/kozugonijugafokiwemef.pdfIn PDF document text
  • http://psychoterapia-przemysl.net/img/userfiles/file/gukonadenurerotipe.pdfIn PDF document text
  • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160c3c55d7be54---ledivulimubuwajirelokod.pdfIn PDF document text
  • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/3363bf1e67cc73caa927449cc93989e4/zefufajafusinegemolav.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=world+art+competition+2020PDF 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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