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://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/eop1a0t22at209k1svo4f73jm2/sivuwowupo.pdf In PDF document text

  • http://al-bandak.com/userfiles/file/84687805034.pdfIn PDF document text
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/8276761566.pdfIn PDF document text
  • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/76c1209ec267017848385fe70963c2c8/20147579811.pdfIn PDF document text
  • http://karlsbach.de/userfiles/files/49597830540.pdfIn PDF document text
  • http://namkhoabacninh.com/images/files/78813583594.pdfIn PDF document text
  • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/0a4dee08e78634340e708ef7eb83f808/47342094863.pdfIn PDF document text
  • http://chetanaus.org/bheru/uploadfiles/file/65495058308.pdfIn PDF document text
  • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160729dfb2244b---76386338131.pdfIn PDF document text
  • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ad93d152aea---11457721915.pdfIn PDF document text
  • https://cakenflowersonline.com/userfiles/file/netofirejawokuxexobixa.pdfIn PDF document text
  • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d932242bb2c---16985601775.pdfIn PDF document text
  • https://lucky-erotic-massage-bucharest.ro/ckfinder/userfiles/files/15782559485.pdfIn PDF document text
  • http://cukierniabrzezinski.pl/www/artizam/fck/file/65219034709.pdfIn PDF document text
  • http://compufoxmail.com/userfiles/file/faguvijosape.pdfIn PDF document text
  • https://stvorki.ru/files/file/rifezinefagiririlavovem.pdfIn PDF document text
  • https://karapinarinsaat.net/userfiles/upload/file/63591123016.pdfIn PDF document text
  • http://dezmaster.com/userfiles/file/81405274133.pdfIn PDF document text
  • http://srihemkuntsahibfgp.org/hemkunt/userfiles/file/57878253319.pdfIn PDF document text
  • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/5e134d04c1f11a63683f40e5fd3987f5/3279163225.pdfIn PDF document text
  • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae6a878a840---69775864503.pdfIn PDF document text
  • http://naturabliskociebie.pl/userfiles/file/93054176189.pdfIn PDF document text
  • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab1593dcd4---98600522362.pdfIn PDF document text
  • http://elsekmont.eu/userfiles/file/gamaligexumebazul.pdfIn PDF document text
  • http://wimborst-ceramics.nl/public/view/upload/fckeditor_images/file/51467715208.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=image+to+pdf+converter+app+for+androidPDF 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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