Malicious PDF — malware analysis report

Heuristics 6

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LURE
  PDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked URL.
• 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.
• 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://cructi.ru/uplcv?utm_term=distinguish+between+isothermal+and+adiabatic+process+shaalaa.com In PDF document text

  • http://bdn10.cz/files/file/81334988810.pdfIn PDF document text
  • http://bigsvatcharasith.com/userfiles/file/32501958311.pdfIn PDF document text
  • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c1dc22c930---nakipemunu.pdfIn PDF document text
  • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079fabd44903---74765279976.pdfIn PDF document text
  • https://glbtrader.com/userfiles/file/zodukekilopoto.pdfIn PDF document text
  • http://www.ortodonciaelisafarache.com/ckfinder/userfiles/files/matoluxel.pdfIn PDF document text
  • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/pu3jtnamojml6kcmljfq9vo9fc/telopurobituwagubesorinas.pdfIn PDF document text
  • http://safires.cz/ckfinder/userfiles/files/40764151326.pdfIn PDF document text
  • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16093dd60e41f0---lelonorezujaxefop.pdfIn PDF document text
  • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/08edefe7bdc81b53c3551b66f423c4f3/lubuxugowunul.pdfIn PDF document text
  • http://teknis.it/userfiles/files/lisidenagudebulo.pdfIn PDF document text
  • https://advance-pack.com/editor_upload/file/watularosiwajaxugop.pdfIn PDF document text
  • http://uniroll.pl/user_images/file/wisesuv.pdfIn PDF document text
  • http://4grd.com/cmsimages/file/32081996035.pdfIn PDF document text
  • http://taxicityplus.ru/userfiles/file/folujutugurasajujominuz.pdfIn PDF document text
  • https://stdtekstil.com/upload/ckfinder/files/xilupuvifunapakazutawixer.pdfIn PDF document text
  • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/diguguzusekogepugo.pdfIn PDF document text
  • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/105763a28597eea29fca08f9f85ab791/lenedudurumi.pdfIn PDF document text
  • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/debdc2a60d32825c8b9bbf90efd76e08/15356445837.pdfIn PDF document text
  • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/d95b7c64539e45b7a5c11e54b86af7a4/fawinifozakel.pdfIn PDF document text
  • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/8ms6nnhf06seqeejqj2k9r7lpr/ketubemarorofamofaladuwuk.pdfIn PDF document text
  • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16086a11b257e0---sekisatogadibalutev.pdfIn PDF document text
  • http://imssp.by/data/images/fxeditor/file/98519347212.pdfIn PDF document text
  • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bfb2c420158---gomosuk.pdfIn 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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