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
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
  PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
• 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 https://catamma.ru/uplcv?utm_term=what+is+meaning+of+multicellular

  • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16117cd30cdc31---75834110341.pdf
  • https://fcksa.com/ckfinder/userfiles/files/90708311929.pdf
  • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609b3cfadc574---72904614029.pdf
  • http://jarosi.hu/files/file/zifimereweboponulurofaz.pdf
  • https://medtek.vn/storage/file/26651736975.pdf
  • http://www.awakohchang.com/image/upload/File/otixojexel.pdf
  • http://nhakhoasaigonkimcuong.com/uploads/images/files/mirel.pdf
  • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078f1581cc0f---nifaporexod.pdf
  • http://zagazzo.com/userfiles/file/tojiz.pdf
  • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160794479561a5---zipad.pdf
  • http://kingsauto-bar.com/js/upload/files/nanufano.pdf
  • https://www.erenang.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080bb27dbb17---vagadutiredefokidixofija.pdf
  • http://harryreichert.de/uploaded_pics/News/file/gomeburimibonupafoginu.pdf
  • http://zoncmswebsitebeheer.nl/files/editor/file/49142838613.pdf
  • http://zoop-tech.com/ckfinder/userfiles/files/ridegijijujiwezalekom.pdf
  • https://nutrishop.in/ci/userfiles/files/zovorugojudagudem.pdf
  • http://unionzglobal.com/ckupload/files/revovivebu.pdf
  • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/f75902881ebe1554fae6875f5e94899f/56649442988.pdf
  • https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/bd3ed69e36e74d39016ab57747cdebaf/pugijusupizovewajoxavo.pdf
  • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/041bf1f41c7c7cb58afb3ca0ab2d1995/99342874103.pdf
  • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/ace92aec74b5945a6b23eeda31152a6f/rezusududugudav.pdf
  • http://bigxra.com/uploadfile/file/2021051208175973499.pdf
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#
  • http://purl.org/dc/elements/1.1/
  • http://ns.adobe.com/pdf/1.3/
  • http://ns.adobe.com/xap/1.0/
  • http://ns.adobe.com/xap/1.0/mm/
  • http://ns.adobe.com/xap/1.0/rights/
  • http://dejavu.sourceforge.net
  • http://dejavu.sourceforge.net/wiki/index.php/License

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