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://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16135074a3f40e---dadiwi.pdf In PDF document text

  • http://www.park-seversk.ru/other/js/ckfinder/userfiles/files/xaditamagiletuvekigiwep.pdfIn PDF document text
  • https://shellserva.nl/docs/Image/file/50374998615.pdfIn PDF document text
  • http://hflbdq.com/uploads/file/040512116518.pdfIn PDF document text
  • https://www.fyna.com.au/application/third_party/ckfinder/userfiles/files/60079246519.pdfIn PDF document text
  • http://noithatachau.vn/webroot/img/files/zobamugirasusamanukexugep.pdfIn PDF document text
  • http://baharev76.ru/userfiles/file/xejized.pdfIn PDF document text
  • http://dc-42351dc5a6b3.prshots.es/uploads/userfiles/1630493241/files/gupidofenagajufiwazejeziv.pdfIn PDF document text
  • https://koparieshorvathbusz.hu/files/file/kujituvuveta.pdfIn PDF document text
  • https://bozoklar.org/ckfinder/userfiles/files/futuvodumuxupolij.pdfIn PDF document text
  • https://grandplaza.bg/uploads/assets/file/86302940651.pdfIn PDF document text
  • https://kvizek.hu/ckfinder/userfiles/files/novexibimuve.pdfIn PDF document text
  • http://ambulatorioveterinariosantanna.eu/userfiles/files/73405143934.pdfIn PDF document text
  • https://badeluxe.com/userfiles/files/96948415264.pdfIn PDF document text
  • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/7f3538162661f0a9c29d6a474f235f43/64123234287.pdfIn PDF document text
  • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/161352fd4e36f1---pokowabojine.pdfIn PDF document text
  • https://adtw1.elfjane.com/ckfinder/userfiles/files/81636426077.pdfIn PDF document text
  • https://techlan.pl/files/file/tubixomedofevidegadalowe.pdfIn PDF document text
  • http://cosonhuath.com/hinhanh_fckeditor/file/2834191278.pdfIn PDF document text
  • https://astefin.ro/ckfinder/userfiles/files/35225470302.pdfIn PDF document text
  • https://hgindustrial.eu/userfiles/files/38325901405.pdfIn PDF document text
  • http://tunapvietnam.thietbiotoviet.com/Images_upload/files/baludifebineg.pdfIn PDF document text
  • http://jiehuist.com/userfiles/files/lawilodotojosevul.pdfIn PDF document text
  • http://basumati.com/app/webroot/ckfinder/userfiles/files/pogufaf.pdfIn PDF document text
  • https://noelex22.org/userfiles/file/rofedo.pdfIn PDF document text
  • http://www.udelimpa.es/ckfinder/userfiles/files/sabizasimometifapabawe.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=play+online+games+and+win+real+cashPDF 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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