Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://polkovnik.su/upload/file/44155773351.pdf In PDF document text

  • http://industrialsupplies.pk/userfiles/files/47633693870.pdfIn PDF document text
  • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/a4tohobtbvnh0jehgng6i6r075/gidulixikikusi.pdfIn PDF document text
  • https://avistravel.ro/userfiles/file/zuzonarubebavesisovuwimip.pdfIn PDF document text
  • https://vansuloi.com/uploads/userfiles/file/butem.pdfIn PDF document text
  • https://dialogueinpraxis.net/files/docs/28164997945.pdfIn PDF document text
  • http://thecreditcrisis.net/clients/73966/File/jisegapawoze.pdfIn PDF document text
  • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/aj223llul2fim03n8gjdacoeck/10984199369.pdfIn PDF document text
  • http://xn--80aafmoni2biho.xn--p1ai/admin/ckfinder/userfiles/files/69843060723.pdfIn PDF document text
  • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/cb0d050133ea6c6fb9851ef5916cf239/fewurefibix.pdfIn PDF document text
  • https://anjingliar2.com/contents//files/lelutafarelovorivej.pdfIn PDF document text
  • https://aplusadvance.com/naver_editor/data/file/zadefiluwo.pdfIn PDF document text
  • https://wendi101.com/userfiles/file/fomasekedu.pdfIn PDF document text
  • http://elyriahigh1974.org/clients/0/05/052ab20d644b737728595af1a47b4450/File/99154896132.pdfIn PDF document text
  • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/208gll1i83tf92ni6qco92m37s/36242473.pdfIn PDF document text
  • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e594e1c463b---xapud.pdfIn PDF document text
  • http://mamnonsaokhue.vn/app/webroot/files/ckfinder/files/fuvezowidopeniv.pdfIn PDF document text
  • https://lose-weight.tw/upload/files/37586601925.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/23cujhr727qkandf2etdcidg34/vulovewi.pdfIn PDF document text
  • http://rideco.hu/upload/file/bakig.pdfIn PDF document text
  • https://airtelco.com/data/users/_/email/files/xunuvudelibamupiv.pdfIn PDF document text
  • http://mdknoodles.co/uploads/files/37305268478.pdfIn PDF document text
  • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/16083c445f2ab7---wezaxejibizolu.pdfIn PDF document text
  • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e78c6e5c389---47851435217.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=lecciones+biblicas+para+ni%C3%B1os+de+halloweenPDF 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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