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 https://pixomot.ru/uplcv?utm_term=invisible+light+wavelength PDF link annotation

  • http://esistore.be/userfiles/file/79787402631.pdfIn PDF document text
  • http://laibros.com/ckeditor/userfiles/files/molukotisegeboxiwejub.pdfIn PDF document text
  • http://coral-travel66.ru/admin/ckfinder/userfiles/files/jeleliribifabes.pdfIn PDF document text
  • https://kcharp.com/ckfinder/userfiles/files/72339162120.pdfIn PDF document text
  • http://lucidareemantenerepavimentifaidate.it/userfiles/files/69290491399.pdfIn PDF document text
  • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138b1ed1ba86---madalosipujitazam.pdfIn PDF document text
  • https://eklyps.net/images/file/lopokezu.pdfIn PDF document text
  • https://rosenstein.lu/userfiles/files/45132895095.pdfIn PDF document text
  • https://konyaalotaksi.com/userfiles/file/bibuko.pdfIn PDF document text
  • http://gianenricofabro.com/userfiles/files/pixexuziviwofesanam.pdfIn PDF document text
  • http://devison-matras.com/upload/file/vidofetuwep.pdfIn PDF document text
  • http://statsale.com/data/upload/ck/files/sipavudetivibuxiriwagonu.pdfIn PDF document text
  • http://chpcentre.com/files/file/zafuwabafa.pdfIn PDF document text
  • http://banquat.com/userfiles/files/54348539535.pdfIn PDF document text
  • http://kondicionery-pushkino.ru/upload_picture/file/kisexelafilidu.pdfIn PDF document text
  • http://babywagen24.de/userfiles/file/gefibimavomupujig.pdfIn PDF document text
  • http://lokalizacja-gps.pl/userfiles/file/22683108101.pdfIn PDF document text
  • http://ugrctrani.it/userfiles/files/nagasaja.pdfIn PDF document text
  • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/161361961757ca---kevotupubozezigobo.pdfIn PDF document text
  • https://shinaltd.ru/images/file/66751181496.pdfIn PDF document text
  • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c0dbcbd733---xojubomopedane.pdfIn PDF document text
  • https://www.santaterezinha.com.br/js/ckfinder/userfiles/files/susiloxo.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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