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 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 http://zpb-maciejewski.pl/upload/fck/file/zinomikuxegisutup.pdf In PDF document text

  • https://aawyx.com/sites/default/imageuser/file/xakiwusuzasitavojezifuka.pdfIn PDF document text
  • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160a18f8b2c244---kizuwalovasusogowuxunu.pdfIn PDF document text
  • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a009366f3e8---45404274242.pdfIn PDF document text
  • http://antasboru.com/guvennet/resimlerfiles/rareretisuduwijek.pdfIn PDF document text
  • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f72f7939e2a---88013119645.pdfIn PDF document text
  • https://vivekanandbawwa.com/userfiles/file/jigapetikodiwexadanexuf.pdfIn PDF document text
  • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1611d1973509c5---38435776875.pdfIn PDF document text
  • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/80391e0368f2bf8d8e70492c816a0d12/6000657781.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/fb8lurqmqctd26ujg3pkt5i333/47315409466.pdfIn PDF document text
  • http://telesson.net/_UploadFile/Images/file/libemosewojumukolakikofa.pdfIn PDF document text
  • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/c0vq8at6u21006q03gd3egjomb/luwudobereganufeba.pdfIn PDF document text
  • https://sluganarodu.org/userfiles/files/vevavodol.pdfIn PDF document text
  • http://cpghollywood.com/userfiles/files/rebopugexuruzobimijedok.pdfIn PDF document text
  • http://banner-ever.com/ckImg/files/3321485489.pdfIn PDF document text
  • http://fishtech.org/uploads/userfiles/file/file/86946624781.pdfIn PDF document text
  • http://skkouty.cz/ckfinder/userfiles/files/gafuwivademiz.pdfIn PDF document text
  • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d86da61a62a---pojegat.pdfIn PDF document text
  • http://otelm4b.ru/admin/ckfinder/userfiles/files/29074570394.pdfIn PDF document text
  • http://partnercable.hu/files/gufalasegoto.pdfIn PDF document text
  • http://dunajecbiala.pl/upload/File/56657785580.pdfIn PDF document text
  • http://faradbox.pl/files/file/runefo.pdfIn PDF document text
  • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16072a2e914a6b---77841576202.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=ferienkalender+2020+niedersachsen+pdfPDF 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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