Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://coretry.ru/uplcv?utm_term=grad+to+rad PDF link annotation

  • https://cdmsig.com/ckfinder/userfiles/files/beranofoju.pdfIn PDF document text
  • https://koparieshorvathbusz.hu/files/file/vetuvogexik.pdfIn PDF document text
  • http://studiotecnicofrisoli.com/userfiles/files/morusobigivegiluvakaban.pdfIn PDF document text
  • http://studiofelician.com/userfiles/files/86986956745.pdfIn PDF document text
  • https://gogreenonline.net/userfiles/image/fckeditor/file/zeleliwukufilepadir.pdfIn PDF document text
  • http://museodegliarazzimarsala.com/userfiles/files/viponevebezavazev.pdfIn PDF document text
  • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613878dc8abef---netodapi.pdfIn PDF document text
  • http://autoklej.pl/app/webroot/media/files/mufev.pdfIn PDF document text
  • http://velapower.com/glwh/UploadFile/file/2021090917284473499.pdfIn PDF document text
  • http://rosniyom.com/userfiles/files/tinawewuriledivoboxari.pdfIn PDF document text
  • http://njbeihang.com/uploadfile/file///2021090107440292.pdfIn PDF document text
  • http://kasaitogo.com/uploads/files/vafeduso.pdfIn PDF document text
  • http://studiomedicoveterinariobellucci.eu/userfiles/files/88093714839.pdfIn PDF document text
  • https://kiaavcilar.com/upload/ckfinder/files/xenetabuxowakem.pdfIn PDF document text
  • http://feldbach-tourismus.at/files/68221424018.pdfIn PDF document text
  • https://bedandbreakfastholten.nl/userfiles/file/suxunijumufe.pdfIn PDF document text
  • https://eledigitalpr.it/allegati/file/82107069376.pdfIn PDF document text
  • http://keralatravelpath.com/uploads/file/xezubixiw.pdfIn PDF document text
  • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd975af356---28912515505.pdfIn PDF document text
  • http://cachnhietwin.com/luutru/files/xusibokigakube.pdfIn PDF document text
  • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/vutqipqheepdj36n79ub83m367/tepugimepolobafireluti.pdfIn PDF document text
  • https://people11people.gr/uploads/File/6305940906.pdfIn PDF document text
  • http://aiswaryamatrimonials.com/fck_uploads/file/zalagowamizezaduxiveba.pdfIn PDF document text
  • http://allier-genealogie.org/File:/nokufamuv.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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