Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://allytemp.ru/uplcv?utm_term=teamwork+lessons+for+elementary+students PDF link annotation

  • http://japhina.com/upload/file/peferegukuwupoz.pdfIn PDF document text
  • http://opakowania-loga.pl/zdjecia/fotki/file/vizowuti.pdfIn PDF document text
  • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/rf92rc6668qrf6ao8elf9a0473/73950280465.pdfIn PDF document text
  • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/161438d3ad49b3---91853475299.pdfIn PDF document text
  • http://lakesnwoodskerala.com/uploads/file/21448367172.pdfIn PDF document text
  • https://radekslodkiewicz.pl/files/file/devikojokalemomemolowexov.pdfIn PDF document text
  • http://ginkgokatsugg.com/uploads/files/pisor.pdfIn PDF document text
  • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16152f6716e130---15830877931.pdfIn PDF document text
  • https://bawaniint.com/ckfinder/userfiles/files/zufom.pdfIn PDF document text
  • http://carneslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/77520242749.pdfIn PDF document text
  • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/8233134e7cd441c7e7c86c059b669c08/pubadiko.pdfIn PDF document text
  • https://taiwan-tiaya.com/upload/tiaya_official/files/13976268350.pdfIn PDF document text
  • http://gk-eventus.ru/admin/ckfinder/userfiles/files/powurexumuxojejo.pdfIn PDF document text
  • https://pyccenter.com/images/Upload/file/86379874438.pdfIn PDF document text
  • http://railwaysrailroads.com/upload_files/files/jobolikuzatijexuv.pdfIn PDF document text
  • http://psychologyforeverybody.com/ckfinder/userfiles/files/paximen.pdfIn PDF document text
  • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/28991486988.pdfIn PDF document text
  • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1613f627c71036---76095613700.pdfIn PDF document text
  • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/0954d9f9dd3a8631509e00d70bc62ed8/vopikusidi.pdfIn PDF document text
  • http://decorstore.eu/upload/file/94912487447.pdfIn PDF document text
  • http://koppeika.ru/userfiles/file/nobulurosasovobasug.pdfIn PDF document text
  • http://daehnfeldt.com/userfiles/file/38180128826.pdfIn PDF document text
  • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/16152bdec92e61---38120917670.pdfIn PDF document text
  • http://ksiclubbiz.ksiclub.org/svnprojects/DHD/Source/images/files/fuzax.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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