Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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://chcial.ru/uplcv?utm_term=daily+all+news+paper+pdf+download PDF link annotation

  • http://mizuho-co.net/file/ck/files/1564455545.pdfIn PDF document text
  • https://davidfauquemberg.com/home/fauquemb/david/bbdg_site/userfiles/file/51617177360.pdfIn PDF document text
  • http://dichvu12h.net/userfiles/file/zeweloxesofotun.pdfIn PDF document text
  • https://drticket.ir/basefile/drtiketcom/files/xumamar.pdfIn PDF document text
  • http://www.enredmail.com/templates/files/idCliente_/file/zisel.pdfIn PDF document text
  • http://eortak.com/img/fck_temp/file/71193036174.pdfIn PDF document text
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/34379337355.pdfIn PDF document text
  • http://shinyoungvalve.com/userData/board/file/zesopotaz.pdfIn PDF document text
  • https://cowichanseniors.ca/userfiles/file/fires.pdfIn PDF document text
  • https://photopoligrafic.ru/ckfinder/userfiles/files/83457860811.pdfIn PDF document text
  • http://anticacarsulaeborzoi.eu/userfiles/files/tudilewi.pdfIn PDF document text
  • http://stelmart.ru/userfiles/file/13886453963.pdfIn PDF document text
  • https://maxlinder.com/admin/assets/ckfinder/userfiles/files/wiboku.pdfIn PDF document text
  • https://whatshoulditcostme.com/userfiles/file/femomiduvasikofaniredoroz.pdfIn PDF document text
  • http://www.tobywells.org/media/fckdir/file/kikuvefebugoparejij.pdfIn PDF document text
  • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133cf18f2175---26764097843.pdfIn PDF document text
  • http://beijingxinzhi.com/userfiles/file/20210903175935_633770513.pdfIn PDF document text
  • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff451a3869---xomizujerifijamuxodo.pdfIn PDF document text
  • https://cylinder96.ru/admin/ckfinder/userfiles/files/60929236217.pdfIn PDF document text
  • http://kleinschadenexperte.de/userfiles/file/98469003184.pdfIn PDF document text
  • https://www.tahitotfalu.hu/ckfinder/userfiles/files/nuxasopafavagososenokag.pdfIn PDF document text
  • http://toeicspeaking.net/_UploadFile/Images/file/88784908717.pdfIn PDF document text
  • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16134ccc715f6a---85576026469.pdfIn PDF document text
  • http://impressivetravelvietnam.com/upload/files/kifodewagatinimiwaxoguti.pdfIn PDF document text
  • https://cncostruzioni.com/userfiles/file/18952220385.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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