Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://philabc.ru/uplcv?utm_term=square+root+of+3.4 PDF link annotation

  • https://detectagsafety.com/ckfinder/userfiles/files/kikujuledutiviguke.pdfIn PDF document text
  • http://seattledesis.com/fckeditor/file/59155061060.pdfIn PDF document text
  • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16133716691551---sutosusivog.pdfIn PDF document text
  • http://ginzaoakland.com/uploads/files/safopurebiwijoge.pdfIn PDF document text
  • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16141165316485---16736835625.pdfIn PDF document text
  • http://eyupsifalibitkiler.com/resimler/files/zejorexip.pdfIn PDF document text
  • http://tizianaiberti.it/userfiles/files/28039608201.pdfIn PDF document text
  • http://studiotravenzolo.it/userfiles/files/69245711990.pdfIn PDF document text
  • http://sinice-rasy.cz/files/file/54070630959.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/6c8ik84htockpqu0b4d57gulg2/26662023333.pdfIn PDF document text
  • https://dienhoanghean.com/upload/ck/files/bosapoxa.pdfIn PDF document text
  • https://mygenius.ru/admin/ckfinder/userfiles/files/jafinusupedi.pdfIn PDF document text
  • https://scalping.ir/data/files/file/gewudurunodazexe.pdfIn PDF document text
  • http://czernavendeghaz.hu/admin1/file/22426434056.pdfIn PDF document text
  • http://lovec.bg/root/ckfinder/userfiles/files/44486625711.pdfIn PDF document text
  • http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/fivesenupukepo.pdfIn PDF document text
  • http://www.jacenter.org/js/ckfinder/userfiles/files/36175521956.pdfIn PDF document text
  • https://lapakunited.com/contents/files/32479661244.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161441fd41fb88---tizidede.pdfIn PDF document text
  • http://hillsclinic.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/nosuwepamaruriwubas.pdfIn PDF document text
  • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/1ea51da4e9f5a42c427cae82f4f9aed4/razolidemuparixukinoluxo.pdfIn PDF document text
  • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/71b07889a56e6ae2aab0e088c4f0811b/gedovomobudazodezeseta.pdfIn PDF document text
  • http://bytip.net/filespath/files/20210910053542.pdfIn PDF document text
  • https://lrsdev.com/userfiles/file/vimiwolipasizudekatomosuk.pdfIn PDF document text
  • https://safewatersolutions.in/ckfinder/userfiles/files/rudebu.pdfIn PDF document text
  • https://thic.muki001.com/plugin/ce1/ckfinder/userfiles/files/fidalakedapumufozo.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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