Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://infrive.ru/uplcv?utm_term=how+to+pair+hmdx PDF link annotation

  • http://seoulsquare.com/userfiles/file/1487966067.pdfIn PDF document text
  • http://camionespanamericana.com/userfiles/file/sozorilapu.pdfIn PDF document text
  • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/16096b33c2b05a---tofivi.pdfIn PDF document text
  • https://sasalidayanisma.org/uploads/file/34514017863.pdfIn PDF document text
  • http://chnli.tw/CKEdit/upload/files/74398152310.pdfIn PDF document text
  • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160739ccbcb904---2303342407.pdfIn PDF document text
  • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160bf3c92529b3---60751507636.pdfIn PDF document text
  • http://aiswaryamatrimonials.com/fck_uploads/file/7364667129.pdfIn PDF document text
  • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160801bbd20b96---mezezivipexibexibeto.pdfIn PDF document text
  • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3c6c36740---62902898133.pdfIn PDF document text
  • http://jjkxmy.com/upload/files/202108032346389582.pdfIn PDF document text
  • https://hyosungulf.com/uploads/file/redojubadozipanuxo.pdfIn PDF document text
  • http://kirilmazbardak.com/userfiles/file/roluxaxelu.pdfIn PDF document text
  • http://righetti1970.com/clients/872956/File/kiladewufusodaki.pdfIn PDF document text
  • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160d2e5f53f7a9---9756484158.pdfIn PDF document text
  • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160899548307d2---50709382773.pdfIn PDF document text
  • http://qachs88.com/clients/58271/File/62722383130.pdfIn PDF document text
  • http://salinahighschool1968.com/clients/3/33/33fcb9b832a528c934b1ac42c6b88a99/File/79006513911.pdfIn PDF document text
  • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/4005147842.pdfIn PDF document text
  • https://kisikana.hr/userfiles/file/83770155482.pdfIn PDF document text
  • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076dec722be5---52002852490.pdfIn PDF document text
  • http://adamlegal.com/userfiles/file/48767546542.pdfIn PDF document text
  • http://maszyny.pl/userfiles/file/sikawegekixaz.pdfIn PDF document text
  • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/7qjhrv1ttchigr2ai1lu7g5eh1/70051649039.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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