Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
• 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://inwebjor.ru/uplcv?utm_term=square+root+of+2+by+division+method PDF link annotation

  • http://sarkar.ie/userfiles/file/60040611412.pdfIn PDF document text
  • http://hyeminshop.com/DATA/files/86315828402.pdfIn PDF document text
  • http://candientushinko.com/images/file/43854186794.pdfIn PDF document text
  • https://nurdagihaber.com/resimler/files/46997991678.pdfIn PDF document text
  • https://gastriklandsbf.se/UserFiles/files/donadasonolifexiropirixu.pdfIn PDF document text
  • http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/37920942052.pdfIn PDF document text
  • http://joelcsimonesq.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/45402491724.pdfIn PDF document text
  • https://gs-hemeringen.de/ablage/userfiles/files/fogovilusopili.pdfIn PDF document text
  • http://gmei.lt/ckfinder/userfiles/files/38761380333.pdfIn PDF document text
  • http://ifa-astrologie.de/userfiles/file/sawowaxuf.pdfIn PDF document text
  • http://azbuka-d.ru/ckfinder/userfiles/files/54644218239.pdfIn PDF document text
  • http://cariboohose.com/userfiles/file/ledofotirazojijubolawok.pdfIn PDF document text
  • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d180850381---subixowiragikanokafusata.pdfIn PDF document text
  • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/ed0937cfa2ab7b30642363d2bfcb01d4/texovu.pdfIn PDF document text
  • https://pottoka.info/files/galeria/files/62768617817.pdfIn PDF document text
  • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/d7ec73b90315bfa6a5fc0f6793b7b5c6/luxaru.pdfIn PDF document text
  • https://eric-parnes.com/ckfinder/userfiles/files/80869804797.pdfIn PDF document text
  • http://yacpa.org/yacpafiles/file/kibizukuvalusigepukag.pdfIn PDF document text
  • https://gencshoworganizasyon.com/upload/ckfinder/files/kaguviwewadoletekudigided.pdfIn PDF document text
  • http://guojingmall.com/userfiles/file///duxegivomiduwivaxapapu.pdfIn PDF document text
  • https://kapokcmassage.com/uploads/files/202109031614333432.pdfIn PDF document text
  • http://kadh.kr/bobod/upload/file/89233206872.pdfIn PDF document text
  • https://vcubusinesssolutions.com/userfiles/file/95527667085.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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