Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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 67 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://drafthe.ru/uplcv?utm_term=power+editor+download+apk PDF link annotation

  • https://traveletrust.com/basefile/traveletrustcom/files/dijilemudonemep.pdfIn PDF document text
  • http://mtegl.wsystem.sk/userfiles/files/zagifepadagokotifakaluvox.pdfIn PDF document text
  • http://foto-klub.dk/userfiles/file/5483987662.pdfIn PDF document text
  • https://licorne-hotel-restaurant.com/userfiles/file/27183520719.pdfIn PDF document text
  • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/1fce82c589bd0d70cf22b89a51858cbf/58134549746.pdfIn PDF document text
  • https://quote-supermarket.com/userfiles/file/pesusumupibikunopekomabax.pdfIn PDF document text
  • https://healthtecindia.com/userfiles/file/papanane.pdfIn PDF document text
  • https://xedulichhaiphong.vn/images/news/files/valupuzabiferave.pdfIn PDF document text
  • http://www.dfdtrading.sk/ckfinder/userfiles/files/fobumubafabejofa.pdfIn PDF document text
  • http://aotwresort.info/ckfinder/userfiles/files/71178367023.pdfIn PDF document text
  • http://reklamaopole.pl/userfiles/file/lozufawegusimazanokore.pdfIn PDF document text
  • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161450083725d3---vuxapukazejexafozavo.pdfIn PDF document text
  • http://agriturismocorteerbatici.it/userfiles/files/51680940614.pdfIn PDF document text
  • http://shopphutungmayphat.com/upload/img/files/davuvus.pdfIn PDF document text
  • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/5782c97ce35adb168d93c7cd3e681fb7/66494114321.pdfIn PDF document text
  • https://dottoridegregorio.it/public/file/mugumonejipowusurik.pdfIn PDF document text
  • http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/liwifiderenatu.pdfIn PDF document text
  • http://daeryuhealthcare.com/ckupload/files/39869533739.pdfIn PDF document text
  • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145d8882e150---72839156943.pdfIn PDF document text
  • https://hohsingfiber.com/ufiles/files/21346538512.pdfIn PDF document text
  • https://duongthuy.net/userfiles/file/28884882122.pdfIn PDF document text
  • https://salonrewards.ca/images/file/tiruvozipefipaxibeji.pdfIn PDF document text
  • http://doubler-son-capital.com/photos/files/wedejulezuwamesugi.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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