Malicious PDF — malware analysis report

Heuristics 7

• 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 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.
• 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://crysiq.ru/uplcv?utm_term=corrig%C3%A9+bac+stmg+maths+2018 PDF link annotation

  • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ae71a883c8c---81279957023.pdfIn PDF document text
  • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/f9bdb923e332d98e751262b063e2c895/vojelejerowobofawowogujej.pdfIn PDF document text
  • http://www.adarshvidhyasankul.org/userfilesfile/fugidazawukeluruwurugig.pdfIn PDF document text
  • https://www.tratedu.net/ssss2018/assets/143ad273/ckfinder/core/connector/php/upload/userfiles/files/1cc8e595506f7463c513238a3bf3f9e8.pdfIn PDF document text
  • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160e515ab7b455---wugek.pdfIn PDF document text
  • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/f346e18a6912280da98c5e93784b96b6/bilukoporepulusajebi.pdfIn PDF document text
  • https://shen-su.eu/gfx/userfiles/files/30246963666.pdfIn PDF document text
  • http://bacvietexpress.com/upload/userfiles/files/vopawonefebiliv.pdfIn PDF document text
  • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/78365a027770152b344882208fe5516b/xorali.pdfIn PDF document text
  • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611fbc9d3762e---91213330505.pdfIn PDF document text
  • http://ambulatorioveterinariobubiniregini.eu/userfiles/files/60808936086.pdfIn PDF document text
  • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/0b153ecadb62b81bf4efa07af5d71cb1/merunomisezomozoxili.pdfIn PDF document text
  • http://xn----dtbsgbucafmmaf.xn--p1ai/servimages/editor/files/52832226504.pdfIn PDF document text
  • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/c15d74bf397756e8f4ad2e9af4263f32/tobavelegudoviniwo.pdfIn PDF document text
  • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce5c114925---31207497428.pdfIn PDF document text
  • https://cowichanseniors.ca/userfiles/file/96275146563.pdfIn PDF document text
  • https://bodymason.com/user_uploads/files/lelimatedabigazebuju.pdfIn PDF document text
  • https://uangraja.com/contents//files/tawupififunuzamugubewasir.pdfIn PDF document text
  • https://bibonatura.hu/ckfinder/userfiles/files/69658529609.pdfIn PDF document text
  • http://aksaaydinlatma.com/img/editor/image/file/sawotizumite.pdfIn PDF document text
  • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d84b9c8116a---xowuba.pdfIn PDF document text
  • http://gingerbreadvillage.org/clients/e/e3/e396b250b60561adcb946853f9f62e29/File/29862385576.pdfIn PDF document text
  • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f109ec1a981---32653590804.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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