Malicious PDF — malware analysis report

Heuristics 7

• 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://asiahealthcaredentalcentre.com/ckfinder/userfiles/files/pemetefibe.pdf In PDF document text

  • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143c38df03df---tuzumebaje.pdfIn PDF document text
  • https://leavereview.com/customerinterview/ckfinder/userfiles/files/rumudesomora.pdfIn PDF document text
  • http://expresskaliski.info/file/90638860082.pdfIn PDF document text
  • http://ambulatorioveterinariocigliano.com/userfiles/files/86162587065.pdfIn PDF document text
  • https://butyfarm.mm520.net/userfiles/files/delugikifipat.pdfIn PDF document text
  • http://kelkenaghshband.com/app/webroot/img/files/68299721453.pdfIn PDF document text
  • http://gospel-pour-100-voix.com/fichiers/newsletter/file/lawetonimavofojojebonov.pdfIn PDF document text
  • http://files.ibiza-ferien.de/file/97564297282.pdfIn PDF document text
  • http://schokoladenfontaene.de/idata/tebanekinuwir.pdfIn PDF document text
  • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/97c6039da0ee15d925aa651da5a31f74/29811286624.pdfIn PDF document text
  • http://xn--9i1b14l32gg2dsybq3b.com/upload/fckeditor/file/43018718977.pdfIn PDF document text
  • https://bibliotheque.ville.deux-montagnes.qc.ca/ckfinder/userfiles/files/16874102160.pdfIn PDF document text
  • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16141da253e9a0---rewomu.pdfIn PDF document text
  • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/xipitofigoberisudalakize.pdfIn PDF document text
  • http://hotdeals24x7.com/ci/userfiles/files/boduf.pdfIn PDF document text
  • https://watertorens.nl/userfiles/file/82708260423.pdfIn PDF document text
  • http://cps-mbstu.edu.bd/app/webroot/js/ckfinder/userfiles/files/91119665885.pdfIn PDF document text
  • http://decaiyun.com/upload/file/210914154957109204y6mx0mma25z5.pdfIn PDF document text
  • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/ndaf4j03c8as6frigo4ok7pcd7/2000126995.pdfIn PDF document text
  • http://webinaris.biz/ckfinder/userfiles/publics/files/14958777210.pdfIn PDF document text
  • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/5b7b9d1bcb2a5bcbef624f8b01ec3ad6/sozegisu.pdfIn PDF document text
  • https://thibiditrading.com/public/userupload/files/8965676491.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=is+facetime+the+best+video+callPDF 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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