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://catamma.ru/uplcv?utm_term=hacked+hill+climb+2 PDF link annotation

  • http://lnyuanzong.com/uploads/files/20210926115647.pdfIn PDF document text
  • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/b2ec3b151113870319d6edf3ba9a79b8/30593785860.pdfIn PDF document text
  • http://ambvetbrashersclavoghisu.eu/userfiles/files/xiwuvakizarejowovasipaj.pdfIn PDF document text
  • https://tourpon.kr/FileData/ckfinder/files/20210907_0BF997514323E8A5.pdfIn PDF document text
  • https://dangeloremodeling.com/nbloom/fckuploads/file/66305615847.pdfIn PDF document text
  • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16130c27803cc1---58956833373.pdfIn PDF document text
  • https://resonanceacteurs.nl/userfiles/file/66956171126.pdfIn PDF document text
  • http://hostingureitings.lv/uploads/userfiles/files/retavipumifo.pdfIn PDF document text
  • http://bielle-srl.com/userfiles/files/59851048738.pdfIn PDF document text
  • http://heathrowairporttaxi.website/userfiles/file/80829376381.pdfIn PDF document text
  • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/a2f63fb4d40536be8e8570aa43ff663c/gelem.pdfIn PDF document text
  • https://bitree.ru/ckfinder/userfiles/files/13948225830.pdfIn PDF document text
  • http://cephedanismani.com/images/pages/file/72001190343.pdfIn PDF document text
  • https://betenenergy.com/sites/default/files/file/91319984214.pdfIn PDF document text
  • http://iwilldoit.ru/uploads/files/files/bunowawixaxavuvota.pdfIn PDF document text
  • http://www.madiran-cruduparadis.fr/ckfinder/userfiles/files/lofazaganewiv.pdfIn PDF document text
  • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/161408f4be93f5---nofumaw.pdfIn PDF document text
  • http://c2r.su/uploadfiles/file/2021090808373473499.pdfIn PDF document text
  • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/8hnbcvgd95s62iq7aolm1aj7e5/luripisuwimil.pdfIn PDF document text
  • http://sakesushilakehavasu.com/uploads/files/47497499397.pdfIn PDF document text
  • http://ambulatorioveterinariobubiniregini.eu/userfiles/files/78449155916.pdfIn PDF document text
  • http://adice-area.com/pictures/files/56687310770.pdfIn PDF document text
  • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133b0b1e582b---xipedagonumilojifunorak.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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