Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://coretry.ru/uplcv?utm_term=case+animatronics+android PDF link annotation

  • https://ojazzdance.fr/userfiles/file/75184064395.pdfIn PDF document text
  • http://dc-42351dc5a6b3.prshots.es/uploads/userfiles/1630508545/files/gesafivimupokojunulobedul.pdfIn PDF document text
  • http://hstechno.com/userData/ebizro_board/file/52099068580.pdfIn PDF document text
  • http://bidwoodmachine.com/d/files/16172220581.pdfIn PDF document text
  • http://filippodelvita.com/demo/userfiles/file/60294332348.pdfIn PDF document text
  • http://kibbkw.com/uploads/files/9331429615.pdfIn PDF document text
  • http://herbwaterthailand.com/userfiles/files/xivipogudoviwerigozemo.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/2n0ldu3kqthag6bfmemijvu704/duwiviwu.pdfIn PDF document text
  • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/bbc1f55c2bb17d0315e8e70b740ac831/51722277614.pdfIn PDF document text
  • http://csc0516.com/userfiles/file/20210902145838_49pfz1.pdfIn PDF document text
  • http://kechengchem.com/upload/files/78650921015.pdfIn PDF document text
  • https://firsatoyun.com/calisma2/files/uploads/31006404190.pdfIn PDF document text
  • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135038eb7b86---puzapo.pdfIn PDF document text
  • http://sonnenheizungen.ch/fckeditor/editor/images/file/4640867783.pdfIn PDF document text
  • https://nobelboya.com/userfiles/file/janajukoxusunobexikizuje.pdfIn PDF document text
  • https://www.mmgrowersg.com/ckfinder/userfiles/files/74752723476.pdfIn PDF document text
  • http://namlinhchivietnam.net/userfiles/image/file/32878869510.pdfIn PDF document text
  • http://serdceprirody.ru/userfiles/file/4701770161.pdfIn PDF document text
  • http://elcolono.net/userfiles/files/vifomadakituliz.pdfIn PDF document text
  • http://indel.sk/userfiles/file/juduvojajofob.pdfIn PDF document text
  • http://juncheng.tw/upload/files/5463529986.pdfIn PDF document text
  • https://nsaimmigration.com/userfiles/file/18849912223.pdfIn PDF document text
  • http://xn--90afqerdlt1f.xn--p1ai/admin/ckfinder/userfiles/files/88721726373.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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