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 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://infrive.ru/uplcv?utm_term=what+is+my+msisdn PDF link annotation

  • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/af16d03d07e6e5abbc4e46f0faaa3f2b/suragewexexuti.pdfIn PDF document text
  • https://nls.vn/upload/files/kedukujalubafave.pdfIn PDF document text
  • http://clinical-pain.com/pds/userfiles/files/82582190799.pdfIn PDF document text
  • http://baschin-heizung.com/meineBilderAlbertGrundschule/file/fuxuwifu.pdfIn PDF document text
  • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/md7lv86lqhn61jgh4bq4qcron1/piberotevi.pdfIn PDF document text
  • https://media-get.com/userfiles/files/20971859428.pdfIn PDF document text
  • http://mazurubezpieczenia.pl/zdjecia/fck/file/96603066261.pdfIn PDF document text
  • http://townofwinslowin.com/flash/townofwinslowin.com/file/ketizawudax.pdfIn PDF document text
  • http://ilturismoinitalia.it/userfiles/files/81855108080.pdfIn PDF document text
  • http://koreaseowon.com/ckupload/files/raresetuweme.pdfIn PDF document text
  • http://nfraccon.org/userfiles/file/nodajususegagimad.pdfIn PDF document text
  • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/kq9geu9pdrlqlq04439fost976/nugaratusu.pdfIn PDF document text
  • http://canhtoanland.com/upload/files/lobikezenexofetezaxiwe.pdfIn PDF document text
  • https://dolaodong.com/userfiles/file/jopebipo.pdfIn PDF document text
  • http://vita24h.com/uploads/userfiles/file/mavunolemekege.pdfIn PDF document text
  • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6c4c35e786dea017c588656055bedf6d/voxujujogakuvijofujumekof.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614bbda40aa38---70691050241.pdfIn PDF document text
  • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16162d0107266a---88279389817.pdfIn PDF document text
  • http://specialcats.nl/media/files/reregosewupezorir.pdfIn PDF document text
  • http://bluecars.pl/userfiles/file/47926592835.pdfIn PDF document text
  • http://esistore.lu/userfiles/file/88434191878.pdfIn PDF document text
  • http://www.anclupnapoli.it/userfiles/file/gorabepizigenitivax.pdfIn PDF document text
  • http://eschool365.in/js/admin/uploadfiles/file/mosodepepazumofudokexusa.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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