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 http://jlsxjy.com/right/UploadFile/file///2021090500205473499.pdf In PDF document text

  • http://topbuild.net/content/xuploadimages/file/dowojuneberibajozej.pdfIn PDF document text
  • http://kruengrangthai.com/files/files/dojegobufedoximalejowa.pdfIn PDF document text
  • https://prosaison.fr/userfiles/files/1008961246.pdfIn PDF document text
  • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/b2ctt77lhm3ce2bc8oe4fru2t7/27937655442.pdfIn PDF document text
  • https://hopadive.cz/ckfinder/userfiles/files/8969204989.pdfIn PDF document text
  • http://dirpub.org/editor/ckfinder/userfiles/files/45083283131.pdfIn PDF document text
  • https://pielinks.com/UserFiles/file/fefewumuba.pdfIn PDF document text
  • http://mixmarketing.vn/upload/fck/file/mewazumuxev.pdfIn PDF document text
  • http://michalpavlicek.com/uploaded/file/53603151292.pdfIn PDF document text
  • http://terremeraude.com/userfiles/file/96412470310.pdfIn PDF document text
  • http://seoulmenu.com/uploads/files/66087830160.pdfIn PDF document text
  • https://zagi.hr/files/13266836734.pdfIn PDF document text
  • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/161429bd220179---nibutarijof.pdfIn PDF document text
  • http://ambulatorioveterinariovianello.eu/userfiles/files/wofomon.pdfIn PDF document text
  • http://tienhasteel.com/app/webroot/upload/files/40132062893.pdfIn PDF document text
  • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140e3e86b0b8---6608858931.pdfIn PDF document text
  • https://iphonerepairservice.nl/app/webroot/files/userfiles/files/jevexoko.pdfIn PDF document text
  • http://www.startservis.sk/novy/ckfinder/userfiles/files/91840110925.pdfIn PDF document text
  • http://clubesquilacoma.com/uploads/files/71386361003.pdfIn PDF document text
  • http://shopcloud.cloud/ckfinder/userfiles/files/xakubuk.pdfIn PDF document text
  • http://kyea.org/imageuploads/68938976906.pdfIn PDF document text
  • http://montoaneli.com/ckfinder/files/fupazafivenuvovok.pdfIn PDF document text
  • http://ckattorneys.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/94395117095.pdfIn PDF document text
  • https://goldenlinejsc.com/userfiles/file/lojesitujidof.pdfIn PDF document text
  • https://netwindowvn.com/uploads/userfiles/file/likifaribavam.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=tv+cast+android+tvPDF link annotation
  • 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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