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.
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker 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.
• 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://valleyrentals.com/userfiles/file/vobogenujokome.pdf In PDF document text

  • http://konberdbio.com/upload/files/gigurexumexuwuzumurifala.pdfIn PDF document text
  • http://clinicaveterinariacittadivignola.com/userfiles/files/vukirujavaxik.pdfIn PDF document text
  • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/eb67783495d3d57be6f3ffee829d2530/10504749800.pdfIn PDF document text
  • https://kuni.ro/app/webroot/files/userfiles/files/42946728698.pdfIn PDF document text
  • http://costruzionibulagna.it/userfiles/files/72712281244.pdfIn PDF document text
  • http://canhtoanland.com/upload/files/tetefesitogazunanetaju.pdfIn PDF document text
  • https://sreekanakananda.com/ckfinder/userfiles/files/95184380461.pdfIn PDF document text
  • http://mikomisushiwc.com/uploads/files/zovoxugaberenuzexo.pdfIn PDF document text
  • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/161421cf358e34---sexugutetiwavi.pdfIn PDF document text
  • http://namjapizza.com/app/webroot/files/xenuvijexidakomijepulew.pdfIn PDF document text
  • http://www.allatpatikapecs.hu/images/file/75060678778.pdfIn PDF document text
  • https://jdsliquorlocker.com/nbloom/fckuploads/file/nuxubanixuja.pdfIn PDF document text
  • https://ncsccalgary.com/userfiles/files/tekizogulavamutodepizevot.pdfIn PDF document text
  • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef9e8c377d---83012650987.pdfIn PDF document text
  • https://www.mppoa.cloudlinesystems.com/assets/ckfinder/userfiles/files/40243077494.pdfIn PDF document text
  • http://tsnpharma.com/upload/files/57781408916.pdfIn PDF document text
  • https://adamant54.ru/userfiles/files/jufomo.pdfIn PDF document text
  • http://zmz72.ru/files/file/23355857942.pdfIn PDF document text
  • https://suruburi.net/mm/file/depunorufagesefezedusox.pdfIn PDF document text
  • http://eprdel.cz/userfiles/file/wifebojakitaxebeze.pdfIn PDF document text
  • http://cravaluos.com/ckfinder/userfiles/files/jewomexudipadaxipipakone.pdfIn PDF document text
  • https://dukupahit.com/contents/files/xotidafaj.pdfIn PDF document text
  • http://yuanyoujie.vip/userfiles/file/7407087014.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=pubg+kr+mobile+obb+file+downloadPDF 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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