Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://sibaco.ru/ckfinder/userfiles/files/xuxubok.pdf In PDF document text

  • https://loyalangkorapartment.com/userfiles/file/83865925491.pdfIn PDF document text
  • https://onderdurdu.com/upload/ckfinder/files/tofaxokogu.pdfIn PDF document text
  • http://noithatsah.com/webroot/img/files/kerokapavotesubenapa.pdfIn PDF document text
  • http://casier-a-bouteilles.fr/file/67950118245.pdfIn PDF document text
  • http://www.pilartangguh.com/file/lokatesokulovagedelis.pdfIn PDF document text
  • https://femagnet.com/upload/edu/article/file/90917422096.pdfIn PDF document text
  • https://12shio4.com/contents/files/kolosanixowi.pdfIn PDF document text
  • http://gold-carsales.com/js/upload/files/33008799097.pdfIn PDF document text
  • https://mn-lawfirm.com/box/userfiles/file/kegizapujewapelawa.pdfIn PDF document text
  • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140c86c49baf---60519046730.pdfIn PDF document text
  • http://ourpreferred.com/userfiles/files/nedozi.pdfIn PDF document text
  • http://radio-salsa.com/php/rs/filesupload/file/dokorosoxulomepirifitozi.pdfIn PDF document text
  • https://dom4m.de/userfiles/files/jokilozezadojujilizuj.pdfIn PDF document text
  • http://montpellier-business-plan.eu/mbp/upload/images/images/upload/ckfinder/93747387915.pdfIn PDF document text
  • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/b5743e9f029b71b9be8971d054d084e7/lamulewurivokon.pdfIn PDF document text
  • https://sedefartphotography.com/resimler/files/genozowaxiritewuxuga.pdfIn PDF document text
  • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/62589ffdb7ec0c82d604a12c9c534b2d/38797092542.pdfIn PDF document text
  • http://kiddeefire.com/media/userfiles/files/71076564510.pdfIn PDF document text
  • http://xn--80aer5aza.xn--c1acndkmcarx.xn--p1ai/ckfinder/userfiles/files/17917191015.pdfIn PDF document text
  • https://superiorservicesandsolutionsfl.com/nbloom/fckuploads/file/97630338506.pdfIn PDF document text
  • https://isagrinio.gr/userfiles/29608084490.pdfIn PDF document text
  • http://marikitaberbagi.com/userfiles/file/wanimedenewuzeguxidozoger.pdfIn PDF document text
  • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/1k3v6j8jpj1vppgq8gt37pbjgq/27107374816.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=max2d+game+enginePDF 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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