Malicious PDF — malware analysis report

Heuristics 9

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• ClickFix social engineering attack high SE_CLICKFIX
  Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
• 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
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://krisoc.ru/uplcv?utm_term=how+to+send+pictures+from+laptop+to+phone+via+bluetooth PDF link annotation

  • http://yujinpharma.com/upload/files/zajoven.pdfIn PDF document text
  • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/bf6e90415579a859a9df38ca884d04ab/50568379976.pdfIn PDF document text
  • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/1601a9ff2d8660e117fea981d97c2e2c/jopizokaxofinisorewun.pdfIn PDF document text
  • https://mpksieradz.pl/upload/file/92586071809.pdfIn PDF document text
  • http://runhouchem.com/upload/files/86827915015.pdfIn PDF document text
  • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135ffd14c56d---lalulerinuzuwinexewisosa.pdfIn PDF document text
  • http://inistor.com/ufiles/files/99530674595.pdfIn PDF document text
  • http://club-integra.ru/userfiles/file/83039764082.pdfIn PDF document text
  • http://dryoucosmeceutical.com/userfiles/files/nafafutejis.pdfIn PDF document text
  • https://protraderin.com/userfiles/file/94724183027.pdfIn PDF document text
  • http://tarnava.eu/user_images/file/88047608334.pdfIn PDF document text
  • http://ge-mak.com/files/35151766906.pdfIn PDF document text
  • http://planao.com/ckfinder/userfiles/files/nibajedupubeba.pdfIn PDF document text
  • http://cissi.it/userfiles/files/vezula.pdfIn PDF document text
  • https://yar-net.ru/userfiles/file/tifuraraledopelobafuronej.pdfIn PDF document text
  • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16130601daf00f---malulofabetidejok.pdfIn PDF document text
  • http://aal.tw/uploads/htmlupload/files/29851755389.pdfIn PDF document text
  • https://kapokcmassage.com/uploads/files/202109091902158285.pdfIn PDF document text
  • https://mabuksusu2.com/contents/files/73448761639.pdfIn PDF document text
  • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16135d501e1161---48738019718.pdfIn PDF document text
  • http://sunway.me/uploads/file/092240199627.pdfIn PDF document text
  • http://ttmm.co.jp/ckfinder/userfiles/files/figunesurisekavajixu.pdfIn PDF document text
  • https://mysmartedu.com/uploadimages/files/mufesaregabujopuja.pdfIn PDF document text
  • http://msslink.ru/userfiles/files/tokeletojilakon.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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