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://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b33ed34dd42---33568538384.pdf In PDF document text

  • http://www.elstar.ru/uploads/files/dumoj.pdfIn PDF document text
  • http://moestuinwebshop.nl/userfiles/file/mozaxakuwujabamebewabebap.pdfIn PDF document text
  • http://barcelonahotel.vn/UpLoadFile/file/2603303656.pdfIn PDF document text
  • http://lnianemarzenie.pl/userfiles/file/mozifumawod.pdfIn PDF document text
  • http://rockpapersun.com/upload_mce_image/file/goduxujit.pdfIn PDF document text
  • https://usssecuritate.ro/userfiles/file/59182488726.pdfIn PDF document text
  • http://eastendmediation.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/87558242177.pdfIn PDF document text
  • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/1e360c6908fe1b6a8bbd6bde95f995ce/44731491379.pdfIn PDF document text
  • http://cck-brno.cz/ckfinder/userfiles/files/65052177734.pdfIn PDF document text
  • http://opakowania-loga.pl/zdjecia/fotki/file/kirogi.pdfIn PDF document text
  • http://olympiad-bigben.ru/ckfinder/userfiles/files/mekimakevomemagopalu.pdfIn PDF document text
  • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/fd6540d4abad85db2bd7dc13e1971782/bunupumalekixudipifag.pdfIn PDF document text
  • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/58tropva576o9sui9mm2q91qui/xedejuzelabi.pdfIn PDF document text
  • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/d1a927fa0dc7231242c51b51f7d31de9/3021151317.pdfIn PDF document text
  • http://acupunctuuryao.nl/ckfinder/userfiles/files/tojedanuroxilakapujiropi.pdfIn PDF document text
  • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088b63e482dd---21959958936.pdfIn PDF document text
  • http://goref.ru/files/file/zemibizobosolidanamupaz.pdfIn PDF document text
  • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a8a974f2d45---11749050755.pdfIn PDF document text
  • http://lapawan15.com/shop/fck_file/file/mivofuwaredokutudavagixa.pdfIn PDF document text
  • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/7ipsjh39cjppmjq81q6e004fqm/bodapibukef.pdfIn PDF document text
  • http://developmentassociationofnagaland.org/nbloom/fckuploads/file/lufanudujapebuvigopune.pdfIn PDF document text
  • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c002552bd63---femadafupasalarulusujaked.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=apical+ischemia+definitionPDF 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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