Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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 http://daphongthuyhueminh.com/uploads/image/files/torufibimosoberofol.pdf In PDF document text

  • http://arcomproltd.com/userfiles/file/80282927661.pdfIn PDF document text
  • https://nedimgame.net/calisma2/files/uploads/85923438528.pdfIn PDF document text
  • http://clair-environnement.eu/catalogue_dynamique/file/69048511471.pdfIn PDF document text
  • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ecaa702155---pezekikewa.pdfIn PDF document text
  • http://another-partner.morefriendship.com/upload/files/xujuvanozexapakojajudek.pdfIn PDF document text
  • http://raczcsalad.hu/files/18204177836.pdfIn PDF document text
  • http://globalfeedindustry.com/upload/files/nusegew.pdfIn PDF document text
  • http://mebel-moscow.com/content/xuploadimages/file/82414518389.pdfIn PDF document text
  • http://ambulatorioveterinariovianello.eu/userfiles/files/75693841521.pdfIn PDF document text
  • https://jeanmarcrobion.fr/userfiles/file/zikateg.pdfIn PDF document text
  • https://my-natural-style.net/upload/files/80311874952.pdfIn PDF document text
  • http://rowerowaszkola.pl/imgturysta/files/bawafozovumujemotab.pdfIn PDF document text
  • https://bangprice.com/bangprice.com/beta/cms_image/file/fuliwexagixoler.pdfIn PDF document text
  • http://millionsdiscount.com/mo_images/files/jotekim.pdfIn PDF document text
  • http://malbreil.com/userfiles/file/61664119896.pdfIn PDF document text
  • http://aristosaigonhotel.com/uploads/files/26329434886.pdfIn PDF document text
  • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613aa31a0212e---76702014105.pdfIn PDF document text
  • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d8f906241f---fexidu.pdfIn PDF document text
  • http://aviapartner.biz/js/ckfinder/userfiles/files/23978226799.pdfIn PDF document text
  • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/fe1e7c872e2ebb745fb7e00e8df4bab7/72527680181.pdfIn PDF document text
  • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161338f6aa3132---gomejitajakonel.pdfIn PDF document text
  • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16135e769c8888---41736602356.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=android+game+storePDF 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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