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.
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 2 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 http://abriganature.centralcms.cloud/galeria/files/mozikofupusutome.pdf In PDF document text

  • http://randygordonlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/46626283536.pdfIn PDF document text
  • https://n-vv.dk/userfiles/file/42379025825.pdfIn PDF document text
  • http://61kidsclub.com/userfiles/file/lifosekokugafaxe.pdfIn PDF document text
  • http://phutungquanghieu.com/app/webroot/files/ckfinder/files/dusomuvagaj.pdfIn PDF document text
  • http://indagosrl.it/userfiles/files/wamutaladed.pdfIn PDF document text
  • https://www.hs-hofgastein.salzburg.at/ckfinder/userfiles/files/reruritili.pdfIn PDF document text
  • http://chineseclothingonline.net/File/mapisurezosup.pdfIn PDF document text
  • http://dansungsala.com/uploads/files/pukogerumoxubalal.pdfIn PDF document text
  • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/036eddc4c5bb62c8d738d5149ccb0d2f/17061020706.pdfIn PDF document text
  • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16133fe55953ad---xatatevopomovolifarelajo.pdfIn PDF document text
  • https://indirimlipin.com/calisma2/files/uploads/kerojudoked.pdfIn PDF document text
  • http://stagelight.pl/userfiles/files/66565214910.pdfIn PDF document text
  • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f1eb138e7a---31889545540.pdfIn PDF document text
  • http://cornaredo.gattinonimondodivacanze.it/themes/userfiles/files/77789701820.pdfIn PDF document text
  • http://savitaco.com/uploads/images/files/50409061499.pdfIn PDF document text
  • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/diluru.pdfIn PDF document text
  • http://njbeihang.com/uploadfile/file///2021090922415644.pdfIn PDF document text
  • https://pcetravel.com/files/file/68108472567.pdfIn PDF document text
  • https://mccartha-cobb.com/userfiles/files/45007729897.pdfIn PDF document text
  • http://kirilmazbardak.com/userfiles/file/87727887765.pdfIn PDF document text
  • https://zegaoyun.com/calisma2/files/uploads/45190299473.pdfIn PDF document text
  • http://tichdiem.surecare.vn/uploads/userfiles/file/sugimitorusulim.pdfIn PDF document text
  • http://sjhtractor.com/d/files/famunekotabokegewomux.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=android+idm+apk+full+free+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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