Malicious PDF — malware analysis report

Heuristics 9

• 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://nomylo.ru/uplcv?utm_term=how+to+type+square+root+on+phone PDF link annotation

  • http://boothbayharborshipyard.com/userfiles/file/60283623160.pdfIn PDF document text
  • https://fetogram.ir/images/upload/files/kamof.pdfIn PDF document text
  • https://fengshan-zhennangong.org/upload/ckfinder/files/85583660537.pdfIn PDF document text
  • https://ph2020.org/ckfinder/userfiles/files/dufevelisepomem.pdfIn PDF document text
  • http://playeasypiano.com/resources/fck_images/79381626470.pdfIn PDF document text
  • http://globalfeedindustry.com/upload/files/nipalexujujekuxitenusuv.pdfIn PDF document text
  • http://www.gpkoaee.ru/ckfinder/userfiles/files/21198540327.pdfIn PDF document text
  • http://volkshilfe-ktn.at/images/content/files/lafoxomakid.pdfIn PDF document text
  • https://bdprescription.com/ci/userfiles/files/kipagiseg.pdfIn PDF document text
  • http://sungwoneng.com/upfile_editor/2021/files/12429018881.pdfIn PDF document text
  • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f3f51a77a1---damumu.pdfIn PDF document text
  • http://namngonviet.com/user-/files/34508690310.pdfIn PDF document text
  • https://basisangka.com/contents/files/sifuxedopokedopawuno.pdfIn PDF document text
  • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161320fc22ed49---xixovilapunus.pdfIn PDF document text
  • https://unitytradecapital.com/ckfinder/userfiles/files/38222479046.pdfIn PDF document text
  • https://etonbio.com/newsLetters/images/file/53071606969.pdfIn PDF document text
  • http://snsi.jp/image/news_file/gogaroso.pdfIn PDF document text
  • https://centaur.vri.cz/docs/files/79070942297.pdfIn PDF document text
  • http://www.rpv-drachten.nl/files/file/xeminanozov.pdfIn PDF document text
  • http://www.ochoadentalcare.com/tacgestorcontenidos_ochoa/documentos/file/In PDF document text
  • http://ambulatorioveterinariovianello.eu/userfiles/files/tolowulirakirigepotunanos.pdfIn PDF document text
  • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161340963d6bdb---kizedavusejizuf.pdfIn PDF document text
  • http://fluitec.fr/ressource/site-image/files/pidedalarovuxatogoguga.pdfIn PDF document text
  • http://namadagaskare.ru/ckfinder/userfiles/files/wumofekodema.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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