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://irlanc.ru/uplcv?utm_term=significant+figures+and+rounding+worksheet+answers+chemistry PDF link annotation

  • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/217d48161edaa8df913eba454e1a53d4/lalogubowizixo.pdfIn PDF document text
  • http://thestarbusan.com/FileData/ckfinder/files/20210809_72FF6E76EFEDB517.pdfIn PDF document text
  • https://poganyvolgyi.hu/userfiles/file/kiteku.pdfIn PDF document text
  • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/bnjlujr5j4at5hoaca3nq99odc/gawapavekixevabalinasixe.pdfIn PDF document text
  • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607e48d22a658---82641414764.pdfIn PDF document text
  • https://holocaustresearch.pl/nowy/photo/file/46638955584.pdfIn PDF document text
  • https://hgb.se/filer/file/gikenixi.pdfIn PDF document text
  • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a9cfebad5---kirunisujowux.pdfIn PDF document text
  • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/b9b9962d408c7877f700cc743572563f/zidobizajazu.pdfIn PDF document text
  • http://www.dereformasenalicante.com/archivos/files/mulebafevoxudidadan.pdfIn PDF document text
  • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/lutilizix.pdfIn PDF document text
  • http://dolinakrzeptowa.pl/public/upload/ckfinder/userfiles/files/55660457821.pdfIn PDF document text
  • http://afro-safari.com/upload/files/13952776007.pdfIn PDF document text
  • http://poorclarescork.ie/images/riwibafebo.pdfIn PDF document text
  • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca10264e8c---bovuwudovukopibifoga.pdfIn PDF document text
  • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/3e6efd4d4c428b320569c2e573a6f79e/kazosid.pdfIn PDF document text
  • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/fo7k9i29a3rgjaleb0um73m7pj/busigali.pdfIn PDF document text
  • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160840dd346ae3---dulenupunokarixelugo.pdfIn PDF document text
  • http://gat-asset.com/CKEdit/upload/files/99221676995.pdfIn PDF document text
  • https://allmassage.net/upload/file/20210602180558.pdfIn PDF document text
  • http://peeweeslearningcenter.org/clients/5/54/545fcf94abc6bccf175f3035c740e6d3/File/gokudib.pdfIn PDF document text
  • http://omegapizza.net/uploads/files/70691677207.pdfIn PDF document text
  • https://postelezmasivu-praha.cz/ckfinder/userfiles/files/80836049627.pdfIn PDF document text
  • http://namthangbasaltstone.com/uploads/image/files/93360102725.pdfIn PDF document text
  • https://angkaganjil.com/contents//files/21459593497.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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