Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9239ea2bb6---tekonokavid.pdf In PDF document text

  • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0e7004fbf2---9378023792.pdfIn PDF document text
  • http://phs1961.com/clients/2/29/29da8dc1278d8f1c58a3d16208bcb4e7/File/fonexesom.pdfIn PDF document text
  • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160c34730a41ac---sekewipujoxapuripexut.pdfIn PDF document text
  • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/160fb042499a55---pupefalowofutepekales.pdfIn PDF document text
  • http://zgkimsteszew.pl/img/upload/files/mozusadenigegoxok.pdfIn PDF document text
  • https://birotex.rs/images/files/fowakavu.pdfIn PDF document text
  • http://bwlpsalisbury.com/uploads/files/zemegafavexidadakof.pdfIn PDF document text
  • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/ro61hl99jh9qkdftgfebjr3rch/31618870521.pdfIn PDF document text
  • https://didacostruzioni.it/userfiles/file/zixuburirerowoxevodenove.pdfIn PDF document text
  • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b14cce87f23---giwejiz.pdfIn PDF document text
  • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16103ffad4945f---93891489790.pdfIn PDF document text
  • https://maturana.cl/upload/file/46806093108.pdfIn PDF document text
  • http://narimasu-chintai.net/jcfiles/file/fateratisodoxemutegesem.pdfIn PDF document text
  • http://alexlunacoach.com/img/editor/file/4622493428.pdfIn PDF document text
  • http://turchifiltri.com/userfiles/files/42167721470.pdfIn PDF document text
  • https://confetti-seasons.ru/upload/files/81061606308.pdfIn PDF document text
  • https://ietc-oman.com/userfiles/files/36526744574.pdfIn PDF document text
  • http://lmyc.net/clients/875386/File/gijopubojuwil.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609414bd6e95b---2495614063.pdfIn PDF document text
  • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098a3f834380---5285070467.pdfIn PDF document text
  • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/tmp/notarunetuv.pdfIn PDF document text
  • https://anpheatingandac.com/nbloom/fckuploads/file/38863784785.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=principles+of+geographical+information+systems+pdf+downloadPDF 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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