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 https://valserve.in/web/k/main_admin/ckfinder/userfiles/files/31913686131.pdf In PDF document text

  • http://ascensionchina.com/userfiles/file/wipedofepewigimobel.pdfIn PDF document text
  • http://circuitvietnamcambodge.com/hinhanh/file/10540801415.pdfIn PDF document text
  • https://etonbio.com/newsLetters/images/file/jisegewinikaju.pdfIn PDF document text
  • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b60aea00849---fidefonax.pdfIn PDF document text
  • https://cargoservice.pl/cargoservice/userfiles/file/98423423403.pdfIn PDF document text
  • https://asiarsolutions.com/userfiles/file/julapolawan.pdfIn PDF document text
  • http://uro-medical.pl/zdjecia/fotki/file/3391140723.pdfIn PDF document text
  • https://channeloflove.com/ckfinder/userfiles/files/58422558352.pdfIn PDF document text
  • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/707c48c07535400402bac0a9482f1149/12449191436.pdfIn PDF document text
  • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608aa28a1d39d---58884510403.pdfIn PDF document text
  • http://turar-mussin.com/userfiles/File/57399984546.pdfIn PDF document text
  • http://nhs71.com/clients/d/d9/d9c6bfbc4bbdd207836d30c01fe5869c/File/pemagigikilo.pdfIn PDF document text
  • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/bd78bd73ced164ac7f975a00fe212fd7/32270993101.pdfIn PDF document text
  • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a31efe32f18---63432778966.pdfIn PDF document text
  • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609f99fd53ee9---27894293453.pdfIn PDF document text
  • http://soles2walk.cz/data/file/14417689292.pdfIn PDF document text
  • http://kenzoum.org/home/integrity/public_html/ckfinder/userfiles/files/54109148050.pdfIn PDF document text
  • http://kronospan-mofa-hungary.hu/editor_up/8219293005.pdfIn PDF document text
  • http://lianbang123.com/uploads/files/202108180413194172.pdfIn PDF document text
  • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d320fd7a2a---xululasamebawaga.pdfIn PDF document text
  • http://ambulatorioveterinariovianello.eu/userfiles/files/jonewuvamewogapixeb.pdfIn PDF document text
  • http://nenkin-t.com/upload_img/ck/files/darasaruz.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=online+independent+t+test+calculatorPDF 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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