Malicious PDF — malware analysis report

Heuristics 8

• MFA / one-time-code harvesting lure high SE_MFA_LURE
  Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
• 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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
• 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 http://fslawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wologinakonegipugikebuk.pdf In PDF document text

  • http://chizclean.ru/files/fck/file/tudawiv.pdfIn PDF document text
  • http://chaodontuonglai.vn/uploads/ck_upload/files/93397621728.pdfIn PDF document text
  • http://hamlineparkplaza.com/assets/amund/ckfinder/userfiles/files/47952209659.pdfIn PDF document text
  • http://studiomalpocher.it/userfiles/files/taxexi.pdfIn PDF document text
  • http://khodahoanglang.com/admin/webroot/upload/image/files/74205734237.pdfIn PDF document text
  • https://alakharia.com/public_html/userfiles/file/woxemikasorukewuxofunin.pdfIn PDF document text
  • https://www.savininkai.lt/ckfinder/userfiles/files/nifoxofalitot.pdfIn PDF document text
  • http://sanraimundo.cl/dyn/uploads/file/setaserupuwuxodonig.pdfIn PDF document text
  • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/161410a7489b12---degaziredijok.pdfIn PDF document text
  • http://huabulaw.com/uploadpic/2021-9/file/2021091514371873499.pdfIn PDF document text
  • https://ksboutlet.com/file/files/45293749571.pdfIn PDF document text
  • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161428a882c230---54435756067.pdfIn PDF document text
  • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/161361bc0d7b2d---wepajaxokivomerofasado.pdfIn PDF document text
  • https://xn--bren-mgenwil-gcbf.ch/sites/default/files/fck-uploads/file/16355005811.pdfIn PDF document text
  • https://camelcarpet.org/d/files/zeliredugodu.pdfIn PDF document text
  • https://inprovitecuador.com/ckfinder/userfiles/files/17930071121.pdfIn PDF document text
  • http://www.prctech-th.com/ckfinder/userfiles/files/gimidigibude.pdfIn PDF document text
  • https://nacituran.com/userfiles/file/lazavevadufaso.pdfIn PDF document text
  • http://sangiorgioautoservizi.com/userfiles/files/3896549249.pdfIn PDF document text
  • https://cafesca.info/ckfinder/userfiles/files/liwulaleziwefadig.pdfIn PDF document text
  • https://taichielite.com/louis/taichi/ckfinder/userfiles/files/25142663957.pdfIn PDF document text
  • http://thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/febanebutamovog.pdfIn PDF document text
  • http://vertracapital.com/uploads/files/82866389579.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=android+see+phone+numberPDF 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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