Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://inwebjor.ru/uplcv?utm_term=what+is+required+for+aerobic+respiration+that+is+not+required+for+anaerobic PDF link annotation

  • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/a7613da50123a5075fa26c5ef5260160/1294197325.pdfIn PDF document text
  • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/crtebnc2pt67mbb5s75i6i00d1/wifiji.pdfIn PDF document text
  • http://nhsclassof77.com/clients/c/ca/caa0b9827732345dad94809623212052/File/17956631946.pdfIn PDF document text
  • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/beb6045ddd30859db777e0f74f535312/saxadazezovafetij.pdfIn PDF document text
  • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/5ion7qv4uh64kh4vjlpj028b2i/82752400729.pdfIn PDF document text
  • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161107b4dc3534---71560318962.pdfIn PDF document text
  • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/92d8d88b61ea3a72748b9ab834b626ab/zazirizewage.pdfIn PDF document text
  • https://doellefjelde-mussemarked.dk/images/newsmail/file/40891915789.pdfIn PDF document text
  • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/6e7696635358129284902a6030794851/gefuju.pdfIn PDF document text
  • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0f776db40---jaxezisowebakeveme.pdfIn PDF document text
  • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d67c079fd4b---jiburuzolexukitasive.pdfIn PDF document text
  • https://webupdate.ca/wp-content/plugins/super-forms/uploads/php/files/a6f4d6fva2nae7s3shfjvaj1kh/94307608757.pdfIn PDF document text
  • http://thankschicken.com/uploads/files/vilufiruwe.pdfIn PDF document text
  • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/jpms6kq87nl4qntolm3hq5dpr4/sutijolipuzaki.pdfIn PDF document text
  • http://starinviter.com/ckimagefiles/51594146250.pdfIn PDF document text
  • http://artistalexanderkanevskyroyalshakespeareglobetheatrelondon.com/clientMedia/file/37580669340.pdfIn PDF document text
  • http://nuestratierrapremios.com/campannas/file/magir.pdfIn PDF document text
  • https://espaciocultivarte.com/ckfinder/userfiles/files/xezim.pdfIn PDF document text
  • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bdb23088ec6---livexesunikoxejurix.pdfIn PDF document text
  • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ce89c3618a9---62740514140.pdfIn PDF document text
  • http://brilspa.ro/userfiles/file///90016858636.pdfIn PDF document text
  • http://angarakshaksecurity.com/userfiles/file/91200246146.pdfIn PDF document text
  • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/16rkh4p9mamddcjqoh9sv2vs47/72459426551.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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