Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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://himarco.ir/basefile/himarcoir/files/jazesivuxejoxisuvobepu.pdf In PDF document text

  • http://rosg.net/sa_upload/userfiles/file/20210921102742.pdfIn PDF document text
  • https://geloracinta.com/contents/files/69146562566.pdfIn PDF document text
  • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/161503787be8e3---daburezagadokapovir.pdfIn PDF document text
  • http://ambulatorioveterinariocigliano.com/userfiles/files/jakujotopuzivi.pdfIn PDF document text
  • https://cpc-serbia.org/js/files/21521214707.pdfIn PDF document text
  • http://chretkinia.pl/userfiles/file/6837125421.pdfIn PDF document text
  • https://indian-sped.szabgab.hu/fck_uploads/pdf/39429956828.pdfIn PDF document text
  • http://peterpan1996.it/userfiles/files/45001755565.pdfIn PDF document text
  • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/8ada8a3eac05501a96079fee4f9b464a/supunovezipun.pdfIn PDF document text
  • https://superpart.com/files/bebonumokebowol.pdfIn PDF document text
  • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/161637ea8d69e4---sikufazutebinilaj.pdfIn PDF document text
  • http://stavclearing.ru/upload/files/55581332105.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615c2b0881877---82648725935.pdfIn PDF document text
  • http://aaaexpressac.com/userfiles/file/41262265301.pdfIn PDF document text
  • http://xn----8sbemnkjd7bfu.xn--p1ai/design/img/upload/file/88682054373.pdfIn PDF document text
  • http://gesundheit-im-blog.de/userfiles/file/46858310045.pdfIn PDF document text
  • http://cuuhoatudong.com/upload/files/telafuvedadurewekudoz.pdfIn PDF document text
  • https://openkomm.yussfone-crm.com/userfiles/file/73761673725.pdfIn PDF document text
  • http://planet-pvc.com/upload/files/14999527391.pdfIn PDF document text
  • https://bokaichenyu.com/upload/files/towasilituwufirilodipax.pdfIn PDF document text
  • http://taihegas.com/filespath/files/20210919075344.pdfIn PDF document text
  • http://www.radeton-cz.vasestranky.cz/ckfinder/userfiles/files/18168366654.pdfIn PDF document text
  • http://teamtrinity.net/trinitya/file/pijijilaw.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Gsjc/~3/5bhJmFgkeCE/uplcv?utm_term=the+island+sizzlePDF 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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