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://synerhu.ru/uplcv?utm_term=%D0%BA%D0%B0%D0%BA+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D1%83%D0%B7%D1%8B%D0%BA%D1%83+%D1%81+%D0%B2%D0%BA+%D0%BD%D0%B0+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4 PDF link annotation

  • http://szyqjsj.com/UploadFile/file/20210911172619964.pdfIn PDF document text
  • http://lnyuanzong.com/uploads/files/20210912044817.pdfIn PDF document text
  • http://abwlanham.com/uploads/files/gazizetopelezabipa.pdfIn PDF document text
  • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/o8h0ndevv5b7h4g28brn7upkku/bojil.pdfIn PDF document text
  • http://shsuorui.com/uploadfiles/fckeditor/20210913/file/16315629091254.pdfIn PDF document text
  • https://artistaone.co/userfiles/files/fukoganaxivevodatusofam.pdfIn PDF document text
  • http://almawred-sy.com/files/adminfiles/files/xakerumelave.pdfIn PDF document text
  • http://fine-cottage.ru/userfiles/file/70338539079.pdfIn PDF document text
  • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/f8t2dlo084hg55qc604f609mv7/51544362884.pdfIn PDF document text
  • https://armour-technoz-ca.otzol.net/ckfinder/userfiles/files/malobobezogiwepazo.pdfIn PDF document text
  • https://tuoitre.bacgiang.gov.vn/lib/ckfinder/files/xijumazijiwuki.pdfIn PDF document text
  • http://westpakusa.com/phpsites/vertical_living/uploads/file/97691267415.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/bbpavtkrjpq91tgq7bp3it8770/61941418994.pdfIn PDF document text
  • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ij3m38eijmtsm6vej35tiv8b70/58934190149.pdfIn PDF document text
  • https://solener.info/ckfinder/userfiles/files/44500775481.pdfIn PDF document text
  • http://sqc.jp/user_data/editor/ckfinder/core/connector/php/upload/files/kizomapem.pdfIn PDF document text
  • https://apluskleaning.com/admin/images/file/92677009818.pdfIn PDF document text
  • https://agrilaui.com/userfiles/file/71498977228.pdfIn PDF document text
  • http://clingac.com/d/files/zififimovatozinunegasaner.pdfIn PDF document text
  • https://hoanghaie.com/Images_upload/files/mifezosimaxonamu.pdfIn PDF document text
  • http://impex-italia.it/userfiles/files/dalurelezevupida.pdfIn PDF document text
  • https://alaskaproauto.net/nbloom/fckuploads/file/fajub.pdfIn PDF document text
  • http://siripanyalamphun.com/user_img/files/44095431350.pdfIn PDF document text
  • http://www.zywawiara.pl/pliki/sovukuze.pdfIn PDF document text
  • https://www.emcp-pmce.ca/_includes/ckfinder/userfiles/files/nefalezebupefefupapemed.pdfIn PDF document text
  • https://hearing-outlet.com/uploads/files/202109151254041093.pdfIn PDF document text
  • 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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