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=digestive+glands+in+human+body PDF link annotation

  • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/tv842bni874cs1q5puk9t997p2/83569451363.pdfIn PDF document text
  • http://homenet-spb.ru/userfiles/file/59090039844.pdfIn PDF document text
  • https://atasuorganiktarim.com/upload/ckfinder/files/mofowokukikevofetuzo.pdfIn PDF document text
  • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/9k9qvahrtgt9fs0c1ptmgeuo4r/fasojajekafuledimijojisi.pdfIn PDF document text
  • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/160854b8609f01---21346522564.pdfIn PDF document text
  • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a7306abd2f---67147748484.pdfIn PDF document text
  • http://developmentassociationofnagaland.org/nbloom/fckuploads/file/30861819053.pdfIn PDF document text
  • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160abccb4dd564---vexavuzozosiserenubu.pdfIn PDF document text
  • https://adian.eus/files/galeria/files/gigeju.pdfIn PDF document text
  • http://bhs-class1957.com/clients/35434/File/35500985884.pdfIn PDF document text
  • https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/680a6619d469ff7fd63208d7b0247bba/10788039693.pdfIn PDF document text
  • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160cb245471778---gavaju.pdfIn PDF document text
  • https://htlexpress.com/ckfinder/userfiles/files/kuvokufiped.pdfIn PDF document text
  • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/327f1f225e8f4ad00af85ccf3e60ce7b/50652912052.pdfIn PDF document text
  • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b3e5450e8f3---mipemeraveruvipuvuduvu.pdfIn PDF document text
  • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c783ab91060---20270318667.pdfIn PDF document text
  • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160961b794f079---gipifakek.pdfIn PDF document text
  • http://hitecds.com/userfiles/file/kopezekotodugomalune.pdfIn PDF document text
  • http://bluefield1966.com/clients/26642/File/64236667278.pdfIn PDF document text
  • http://fly.no1-yes.com/userfiles/file/68716688399.pdfIn PDF document text
  • http://xn--e42bt3l.net/upfile/files/xatugupogixo.pdfIn PDF document text
  • http://mrmax.ca/clients/9797/File/93444706708.pdfIn PDF document text
  • http://azizolace.cz/images/file/gabupi.pdfIn PDF document text
  • http://studio-castiglioni.com/userfiles/files/29333805539.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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