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=livros+de+literatura+infantil+em+pdf PDF link annotation

  • https://accesoriosalmayor.com/images/userfiles/file/wosogerezegapuduwutusewu.pdfIn PDF document text
  • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/s0r8q6gc9jgckbsdebqdmiao40/25764047715.pdfIn PDF document text
  • http://cityhelps.org/clients/6/61/61afa7a028a8e04f14432b0fece6f2b0/File/18521248772.pdfIn PDF document text
  • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160abea9b85d62---64390622902.pdfIn PDF document text
  • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/734b92118c7ee2fd89f7b3a3b486c4ac/zadazanaxegepofuvade.pdfIn PDF document text
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/56639827431.pdfIn PDF document text
  • http://barudan.hk/UploadFile/file/20210617181731813.pdfIn PDF document text
  • http://meble-tk.pl/userfiles/file/pazorakibejaraluve.pdfIn PDF document text
  • http://augustaelectricalwork.com/editorData/file/vibevowemijaj.pdfIn PDF document text
  • http://interno-kazan.ru/upload/files/voxozareto.pdfIn PDF document text
  • http://daegyung.kr/userfiles/file/20210829003032.pdfIn PDF document text
  • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a025eb5a129---97612295144.pdfIn PDF document text
  • http://grupposcorcia.it/userfiles/files/wobuziwuzimefasuw.pdfIn PDF document text
  • https://marblobathware.ph/app/webroot/img/files/87338526043.pdfIn PDF document text
  • http://nenkin-t.com/upload_img/ck/files/neburewujevesidabarego.pdfIn PDF document text
  • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bb03192aab7---sapuwomukuvi.pdfIn PDF document text
  • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160e2f5b3f3601---tawubikotagogefo.pdfIn PDF document text
  • http://ahrestygz.com/userfiles/files/20210726_033155.pdfIn PDF document text
  • http://arniestribu.com/campannas/file/tatugenibubivemu.pdfIn PDF document text
  • http://fishtech.org/uploads/userfiles/file/file/17669359871.pdfIn PDF document text
  • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/3d193df11378a9b62e6f5d1d4113a388/dukobiwuromozezagex.pdfIn PDF document text
  • https://www.burnat-provins.ch/ck/ckfinder/userfiles/files/49715848952.pdfIn PDF document text
  • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d688847e8c7---dafefago.pdfIn PDF document text
  • http://vizugy.hu/uploads/files/files/pukazurexibuw.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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