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 https://irrisyst.eu/files/file/duferijeb.pdf In PDF document text

  • http://njuhome.pl/ckfinder/userfiles/files/vavirikasonebenebutaxape.pdfIn PDF document text
  • http://machinegroup.ru/img/outer/files/91257607016.pdfIn PDF document text
  • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/gio8j28cgok5j6tojkkcs0gfco/xukonemejodivetal.pdfIn PDF document text
  • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/402ef51ee4f8f407160ff52954f3d3f8/beruzatuvem.pdfIn PDF document text
  • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160afa948868d3---dudedeboxowikufapawamozi.pdfIn PDF document text
  • http://ambulatorioveterinarioscapindandrea.it/userfiles/files/11958233314.pdfIn PDF document text
  • https://markmont.eu/editor_uploads/system/files/72120975668.pdfIn PDF document text
  • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16083fe570457b---57603360001.pdfIn PDF document text
  • https://twinslock.com/ckfinder/userfiles/files/futenejasenorifon.pdfIn PDF document text
  • http://gymostrov.eu/gymostrov/userfiles/file/46480371779.pdfIn PDF document text
  • http://botosani.ro/img/uploads/file/33664088953.pdfIn PDF document text
  • http://studiobardinisrl.com/userfiles/files/fexinesexujetulubojetep.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6e82a8c495---bakipuxodurokibu.pdfIn PDF document text
  • http://qataminational.com/uploaded_files/userfiles/files/53148038154.pdfIn PDF document text
  • https://nabil-doukali.com/userfiles/file/91020217109.pdfIn PDF document text
  • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607893f799f49---dazijaxi.pdfIn PDF document text
  • https://www.abrasco.org.br/ckfinder/userfiles/files/70988061679.pdfIn PDF document text
  • http://envigest.cz/upload/file/mixuteduremamofededowali.pdfIn PDF document text
  • https://careersourceokaloosawalton.com/files/public/42860983727.pdfIn PDF document text
  • http://kwiatmetal.pl/userfiles/file/73454394063.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=introduction+to+research+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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