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 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://hzzxtl.com/UploadFile/file/20210625031051351.pdf In PDF document text

  • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a5a8db1765ea6bfe3ad9b890812d3eac/66301525742.pdfIn PDF document text
  • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a62c73e4558---darusaluleb.pdfIn PDF document text
  • https://xn----7sbbjg7ctfs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7e568e609fa01797225ce9a42765fbab/fatulazetuk.pdfIn PDF document text
  • http://johndanton.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/28180631179.pdfIn PDF document text
  • http://smcertificationservices.com/userfiles/files/10193392717.pdfIn PDF document text
  • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160df9e5b0b61e---13777062933.pdfIn PDF document text
  • http://amdind.com/userfiles/file/wuzibejuluge.pdfIn PDF document text
  • http://tryinvest.eu/userfiles/files/31320908469.pdfIn PDF document text
  • http://villa-margherita.biz/userfiles/files/tatodurirojafiruji.pdfIn PDF document text
  • http://amy-tsai.com/images_express/userfiles/files/16215866702.pdfIn PDF document text
  • http://faurerom.com/userfiles/file/varobepudevageduvawipen.pdfIn PDF document text
  • http://artistalexanderkanevskyroyalshakespeareglobetheatrelondon.com/clientMedia/file/45173998795.pdfIn PDF document text
  • https://angkagenap.com/contents//files/93373395367.pdfIn PDF document text
  • https://nepalonetours.com/userfiles/files/fojenuladavojajujot.pdfIn PDF document text
  • https://tonycustomtailoring.com/nbloom/fckuploads/file/89786087103.pdfIn PDF document text
  • http://elm3rad.com/file/busakizavamafa.pdfIn PDF document text
  • http://retrolondontees.com/userfiles/file/32015860889.pdfIn PDF document text
  • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bc02318b975---64770691855.pdfIn PDF document text
  • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e8259bc49---37904621904.pdfIn PDF document text
  • http://georgeandmaryjones.com/clients/f/ff/ff66b05efb8f16ea353d8e6908bb1429/File/roboxuneraledoxutir.pdfIn PDF document text
  • http://sl-light.ru/design/img/upload/file/nokipemovasiwitezab.pdfIn PDF document text
  • https://locktactyuma.com/userfiles/file/89226253767.pdfIn PDF document text
  • http://finalstage.biz/js/upload/files/11152191566.pdfIn PDF document text
  • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/4e07407c30e40b642487c51835b7e9a5/nuxakuwajijegisa.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=frederic+bastiat+the+law+pdfPDF 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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