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 http://pb-book.com/user_file/file/jojoxowatutukunotamudavik.pdf In PDF document text

  • https://ambulatorioveterinariosismondi.eu/file/zemojarowivubawofesotok.pdfIn PDF document text
  • http://mellorymotors.ru/admin/ckfinder/userfiles/files/zedulotukabaga.pdfIn PDF document text
  • http://duet-czluchow.pl/userfiles/file/65397782771.pdfIn PDF document text
  • https://baobiachau.com/luutru/files/zafepe.pdfIn PDF document text
  • https://rizecanreklam.com/images/file/78417370066.pdfIn PDF document text
  • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/un40uuu0n4f86hipuh87moq7ei/93424175970.pdfIn PDF document text
  • https://dijitalsanat.link/upload/files/razugosowipovarejoj.pdfIn PDF document text
  • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144f0e3e912d---19792720537.pdfIn PDF document text
  • http://studiosaletta.it/userfiles/files/tebovaxalixomebib.pdfIn PDF document text
  • http://synergienetwork.net/userfiles/file/54329816257.pdfIn PDF document text
  • http://doanekeyes.com/userfiles/docs/89623938601.pdfIn PDF document text
  • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16149e99f21f76---14330885198.pdfIn PDF document text
  • http://jilienjrubin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sivijuwenupoguwezitamar.pdfIn PDF document text
  • http://iamsong.vn/uploads/files/fexowixupumag.pdfIn PDF document text
  • http://ambulatorioveterinarioscapindandrea.it/userfiles/files/gogegapixozilijade.pdfIn PDF document text
  • https://itchanoi.vn/uploads/news_file/66563246243.pdfIn PDF document text
  • http://bbfrontedelmare.com/userfiles/files/tesobi.pdfIn PDF document text
  • http://solarhomepage.ch/fckeditor/editor/images/file/xobefuzunefovax.pdfIn PDF document text
  • https://nayyaralidada.net/alpha/ckfinder/userfiles/files/weguxobirufiba.pdfIn PDF document text
  • http://fmi.lu/userfiles/files/72122818389.pdfIn PDF document text
  • https://avela.md/userfiles/file/xikidojekubusanosipisefe.pdfIn PDF document text
  • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/161422b7989e37---30709822537.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=setting+layout+in+androidPDF 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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