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://confidence-ist.mktechsol.com/ckfinder/userfiles/files/42285418656.pdf In PDF document text

  • https://krygina40.ru/UserFiles/File/zexumim.pdfIn PDF document text
  • http://linuxnewyork.com/draft/media/59939509223.pdfIn PDF document text
  • https://investincarpathians.eu/app/webroot/media/files/94009851731.pdfIn PDF document text
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/danepatarawedopi.pdfIn PDF document text
  • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613b24efe7322---55384725019.pdfIn PDF document text
  • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161324033ee802---82405229911.pdfIn PDF document text
  • http://edu-soft.ru/site/htmlimages/file/93793199237.pdfIn PDF document text
  • http://fuhua.tumujike.com/assets/upload/files/202109121625139299.pdfIn PDF document text
  • https://iwanbim.com/userfiles/files/88996036900.pdfIn PDF document text
  • http://tourbusan.net/FileData/ckfinder/files/20210901_317E393008A050AF.pdfIn PDF document text
  • http://zdrowejaja.com/Upload/file/58594151980.pdfIn PDF document text
  • https://xn----7sbeo1acdy3adh.xn--p1ai/userfiles/file/73916276889.pdfIn PDF document text
  • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/161333e1acf922---tuwajimukotipoz.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a18d4a0d9b---14371724458.pdfIn PDF document text
  • http://dr-temt.ru/images/file/lixugovosadojotowugolunu.pdfIn PDF document text
  • http://entryexpress.online/chapter_images/files/vigibebo.pdfIn PDF document text
  • http://www.wm-meyer.de/meyer/admin/editor/ckfinder/userfiles/files/25242035038.pdfIn PDF document text
  • https://bk.knu.ac.kr/ckfinder/userfiles/files/piritewux.pdfIn PDF document text
  • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/bqsa9s09bp1midbroajjo9dti4d6g25i/xebeletil.pdfIn PDF document text
  • http://orourkelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/85023905870.pdfIn PDF document text
  • http://richmore.kr/uploadfile/fckeditor/file/65703144347.pdfIn PDF document text
  • http://lso-msm.fr/userfiles/file/tetur.pdfIn PDF document text
  • http://tartak-monis.pl/tartak/images/file/rabobowidazazifo.pdfIn PDF document text
  • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16134cd6fa99b0---86602207099.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=the+half+angle+formulaPDF 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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