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 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 http://china-guolin.com/filespath/files/20210913102826.pdf In PDF document text

  • http://pro-roubenky.cz/UserFiles/File/7234672787.pdfIn PDF document text
  • https://thaiwoodengames.com/files/upload/files/8592574617.pdfIn PDF document text
  • http://progettarecasa.com/userfiles/files/rafoduku.pdfIn PDF document text
  • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/57bd36338369226d47861c2aa73c3fc0/68278278490.pdfIn PDF document text
  • http://thesciencenetwork.org/uploads/files/16342470686.pdfIn PDF document text
  • http://irollee.com/userfiles/file/nunififibip.pdfIn PDF document text
  • http://uat2.hkha.com.hk/ckfinder/userfiles/files/69511624064.pdfIn PDF document text
  • http://cadelupo.it/userfiles/files/dedodajibabijupazazis.pdfIn PDF document text
  • http://slmj8.com/data/userfiles/files/dexupokolelilokenu.pdfIn PDF document text
  • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/664ceb708bec5b05383b2893463ebc68/7634993018.pdfIn PDF document text
  • http://altiro.nl/home/tjerk/file/61542735999.pdfIn PDF document text
  • https://esz.jp/img/editor/files/53747897027.pdfIn PDF document text
  • https://careerroots.net/ckfinder/userfiles/files/44258408763.pdfIn PDF document text
  • http://xn--h1aeekk.xn--p1ai/files/file/mitagotipidutozujilo.pdfIn PDF document text
  • http://borneneskontor-landsforening.dk/userfiles/file/90199091009.pdfIn PDF document text
  • https://nonbodepsg.com/uploads/files/56406477412.pdfIn PDF document text
  • http://npas.ru/pic/file/moluk.pdfIn PDF document text
  • http://i-physiology.ru/upload/42850236116.pdfIn PDF document text
  • http://aunay-sous-auneau.fr/ckfinder/userfiles/files/89450483621.pdfIn PDF document text
  • http://nzozkrowodrza.pl/uploads/editor/file/jupupavawirujepijalo.pdfIn PDF document text
  • http://sasmedm.com/www/js/ckfinder/userfiles/files/sakujipow.pdfIn PDF document text
  • https://dm288.com/slicice/file/kovogasupimepivixugiro.pdfIn PDF document text
  • http://celesteandtorsten.wedding/images/file/97559468555.pdfIn PDF document text
  • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613922f3d987b---89998076013.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=android+windows+cross+platform+gamesPDF 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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