Malicious PDF — malware analysis report

Heuristics 8

• 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 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://archism.ru/uplcv?utm_term=zxing+qr+code+generator+c%23 PDF link annotation

  • https://xn--fct8ml6mwue.tw/uploads/files/27474685384.pdfIn PDF document text
  • https://agriturismoilcolle.org/userfiles/file/jaranivav.pdfIn PDF document text
  • http://xn----7sbabaajmdfbk3ddf3azka3b6a2r.xn--p1ai/ckfinder/userfiles/files/nexiduruzuvos.pdfIn PDF document text
  • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1612feba27bb4d---85587869961.pdfIn PDF document text
  • http://malbreil.com/userfiles/file/xibegajejomofekep.pdfIn PDF document text
  • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/b33e5b25e9b7cf7452558918b37d56d2/15481753707.pdfIn PDF document text
  • https://snpwachq.com/files/js/ckfinder/userfiles/files/kujumepolilewig.pdfIn PDF document text
  • http://pamatudarbai.lt/ckfinder/userfiles/files/depuwominasesenevaz.pdfIn PDF document text
  • https://mariellatriolo.it/public/file/melobapuvixefodowiw.pdfIn PDF document text
  • http://tsutae-f.com/js/upload/files/kigeferuludukag.pdfIn PDF document text
  • https://thietbigas.net/media/files/buxelojewegax.pdfIn PDF document text
  • http://steelfurniturecn.com/d/files/32755026303.pdfIn PDF document text
  • https://www.phuketvillarentalandservices.com/ckfinder/userfiles/files/61606856816.pdfIn PDF document text
  • http://kjphotocon.org/data/userfiles/files/84681653717.pdfIn PDF document text
  • http://studiomilano.eu/userfiles/files/gajazeroxedumi.pdfIn PDF document text
  • http://divapharma.com/uploaded/file/419967308.pdfIn PDF document text
  • http://tdbm.vn/upload/files/78638876244.pdfIn PDF document text
  • http://resurrection-life.net/userfiles/files/30440127086.pdfIn PDF document text
  • http://trevelsi.ru/ckfinder/userfiles/files/55971367857.pdfIn PDF document text
  • http://ei-windykacja.pl/upload/file/gisaxiridilopudirivu.pdfIn PDF document text
  • http://xn--80aap0abfiql8h.xn--p1ai/admin/ckfinder/userfiles/files/16640482327.pdfIn PDF document text
  • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ec9e2c6a18---sirafakipamaba.pdfIn PDF document text
  • http://boekenwinkelindex.nl/images/uploads/70599171028.pdfIn PDF document text
  • http://driver-jazda.pl/upload/file/88132519671.pdfIn PDF document text
  • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134c3b0a97d5---xunegizipuramo.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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