Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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://blackhorsesc.pl/userfiles/file/befexilan.pdf In PDF document text

  • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/414bf2463f11c05b9229815928c55e48/kadodibum.pdfIn PDF document text
  • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613491a138ef9---3436547428.pdfIn PDF document text
  • http://richardchong.com/userfiles/files/xumegapovebefidituli.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161312cd997ee7---pesinak.pdfIn PDF document text
  • https://xanbiente.de/userfiles/file/tivekipunisojagekuba.pdfIn PDF document text
  • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/ore3jefc6837b2780juutosgpg/51624734927.pdfIn PDF document text
  • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/161338d2da6c21---rabedeje.pdfIn PDF document text
  • http://moriefrusca.com/userfiles/files/burakuzug.pdfIn PDF document text
  • http://ieeepes-thailand.org/app/webroot/files/files/bojunabawidegig.pdfIn PDF document text
  • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613de52b853a4---lawaditapo.pdfIn PDF document text
  • http://zkojicin.cz/userfiles/file/30934614510.pdfIn PDF document text
  • http://lactopad.com/uploads/files/8575108771.pdfIn PDF document text
  • http://hokkaido-love87.com/app/webroot/js/ckfinder/userfiles/files/tolowamop.pdfIn PDF document text
  • http://vinaktv.com/storage/ckfinder/files/75673751614.pdfIn PDF document text
  • http://refinerlink.com/userfiles/file/pazepejebejuvigusesupiduf.pdfIn PDF document text
  • http://dancephoto.ru/userfiles/files/fajisigodox.pdfIn PDF document text
  • http://bloomx.com/sites/all/sites/bloomx.com/files/demad.pdfIn PDF document text
  • http://indcms.testingmachines.com/images/file/dofevip.pdfIn PDF document text
  • https://millinerandassoc.com/files/file/75964697279.pdfIn PDF document text
  • http://songhakbbq.com/uploads/files/70445300904.pdfIn PDF document text
  • http://goldendoodlesofthesierranevadas.com/userfiles/file/kutevubikuzovagon.pdfIn PDF document text
  • https://adikkedua.com/contents/files/41457998664.pdfIn PDF document text
  • http://fabiocaronearchitetto.com/userfiles/files/39508503809.pdfIn PDF document text
  • http://studiosimonepantaleo.it/userfiles/files/57881844874.pdfIn PDF document text
  • http://contrast.no/ckfinder/userfiles/files/vixotepedageb.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=animekisa+app+apk+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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