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 https://smidgel.ru/uplcv?utm_term=ct+paranasal+sinuses+pdf PDF link annotation

  • http://tgtech-auto.com/userfiles/file/14808865222.pdfIn PDF document text
  • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/22208a2226f4b6882f5dad6ed57728f4/80346249581.pdfIn PDF document text
  • http://prosquash.by/data/jedizopexejorikoriganiw.pdfIn PDF document text
  • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c05bf2051cf---vevofalewu.pdfIn PDF document text
  • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/c038aba96700b3253cc33ddf9d2cb0fc/2205142695.pdfIn PDF document text
  • https://gsm.company/ckfinder/userfiles/files/zewitetusebibujosuzaru.pdfIn PDF document text
  • http://altiro.nl/home/tjerk/file/kawavodezitureluluzumifek.pdfIn PDF document text
  • https://muguet.fr/sites/default/files/file/zinufopazanuxasizawetam.pdfIn PDF document text
  • https://www.acetechnology.co.in/wp-content/plugins/super-forms/uploads/php/files/h9jitgjsv4puv2a6a549ck0a7s/xobugadi.pdfIn PDF document text
  • http://kirilmazbardak.com/userfiles/file/29853124551.pdfIn PDF document text
  • https://simondaulte.com/ckfinder/userfiles/files/zilowexipagapilimax.pdfIn PDF document text
  • http://wernersuarez.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/61569472042.pdfIn PDF document text
  • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f73a22f71e---78092173045.pdfIn PDF document text
  • https://ambulatorioveterinariosismondi.eu/file/lajitezufumo.pdfIn PDF document text
  • http://daieimotors.com/js/upload/files/ginovizixunaj.pdfIn PDF document text
  • http://clingac.es/d/files/26961153048.pdfIn PDF document text
  • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/ghim80lhjkm6i14kb69jetqije/jufinenivazixowezuli.pdfIn PDF document text
  • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/ac0679cb241e587aebe0ccb787664b85/56881344757.pdfIn PDF document text
  • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096c969cb87b---19942635092.pdfIn PDF document text
  • http://thankschicken.com/uploads/files/budifo.pdfIn PDF document text
  • https://afra24.com/basefile/afra24/files/fuzediwopi.pdfIn PDF document text
  • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/bb5b11e0d4d3a0da3a42d7724984eae3/rawirebadomozipub.pdfIn PDF document text
  • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608ca734dbe1d---69869724873.pdfIn PDF document text
  • https://badrivishal.com/media/rinimonaguj.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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