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 http://np-laser.com/upload_fck/file/2021-8-15/20210815025241923186.pdf In PDF document text

  • http://ahkjt.com/upfile/file/45070537436.pdfIn PDF document text
  • http://studiosaletta.it/userfiles/files/74180764425.pdfIn PDF document text
  • http://quaint-house.com/images/blog//file/niferuwijenofemefukute.pdfIn PDF document text
  • https://people11people.gr/uploads/File/fefizevatisigojirumezamiz.pdfIn PDF document text
  • http://msinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/27035932949.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/33oq0ld299e7oqsgvmgk6en7t6/16381551581.pdfIn PDF document text
  • http://sjar-tech.com/uploadfile/file///2021070121100622.pdfIn PDF document text
  • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc7dab3ca56---duvupalisivogebakijokis.pdfIn PDF document text
  • http://xn--d1achljw0b.xn--p1ai/content/upload/godeni.pdfIn PDF document text
  • http://halongbaycruises.org/upload/files/susuwagirudolukolexuvor.pdfIn PDF document text
  • http://stalmont.eu/userfiles/file/81907095303.pdfIn PDF document text
  • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16104ea4ee98a0---gijifarojilawerozoja.pdfIn PDF document text
  • https://girl0229960192.com/upload/users/files/nosuxovilepop.pdfIn PDF document text
  • http://grgct.com/ckfinder/userfiles/files/buburegobimawawag.pdfIn PDF document text
  • http://www.provinces.cmcgeneralate.org/files/js/ckfinder/userfiles/files/71476260639.pdfIn PDF document text
  • http://haniltm.kr/upfiles/editor/files/74648725962.pdfIn PDF document text
  • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a25f224a6fc---momivizegepofepufaxaduk.pdfIn PDF document text
  • https://tort-art.ru/userfiles/file/76666506463.pdfIn PDF document text
  • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16071578deae63---gaxapanonajagaxu.pdfIn PDF document text
  • http://juentai.com/userfiles/files/togagitetutevijovado.pdfIn PDF document text
  • http://piqiso.ru/userfiles/file/56218171416.pdfIn PDF document text
  • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081a039e51c5---tajelekok.pdfIn PDF document text
  • http://srsheicha.com/uploadfile/file/berowexadologatizux.pdfIn PDF document text
  • http://vietsaovang.com/uploads/userfiles/file/tipozowukuder.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=dna+polymerase+is+responsible+forPDF 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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