Malicious PDF — malware analysis report

Heuristics 10

• 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 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.
• 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 67 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://queure.ru/uplcv?utm_term=office+suite+android+download

  • https://coverline.ro/userfiles/file/49721591618.pdf
  • http://wyadonline.com/userfiles/file/3816001400.pdf
  • http://designklasse.de/ckfinder/userfiles/files/rakisegiworuwot.pdf
  • https://yourownadviser.com/ckfinder/userfiles/files/dasunutoluxuzudiru.pdf
  • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b24c0d3cba---japesunozegi.pdf
  • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/daad58a8ac91da39e6477c0c2610c4b3/lulubewokapilog.pdf
  • http://registermycompany.in/admin/userfiles/file/11753673141.pdf
  • http://www.lebedosapartotel.com/data/yukle/files/vugeke.pdf
  • https://drlalashow.com/php/billboard/uploads/file/81437607390.pdf
  • http://parkergeneralcontractors.net/userfiles/file/52435503688.pdf
  • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/3e326f6f64f8dbcbecc6644d235f366e/bafolikuxikumujapuvali.pdf
  • http://onnetsolution.in/userfiles/file/75407621798.pdf
  • http://185.33.116.145/~acus01/upload/files/soguw.pdf
  • http://epoch-making.jp/js/upload/files/zizikanudelegunif.pdf
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/64902307572.pdf
  • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613b2bc85f3ec---wegevonemajizosesuf.pdf
  • https://global-product.org/CKEdit/upload/files/83062366882.pdf
  • https://sportuna.be/ckfinder/userfiles/files/43352181792.pdf
  • https://redengewinnt.com/userfiles/file/38209953515.pdf
  • http://japanbizkorea.com/userData/ebizro_board/file/pekagogazaruvana.pdf
  • http://akcihlar.cz/userfiles/file/buzapuna.pdf
  • https://www.profiemg.cz/upload/ck/files/43186487059.pdf
  • http://maginsaatmetal.com/resimlerfiles/62201729920.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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