Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://laborke.ru/uplcv?utm_term=download+adobe+after+effects+cs6+free+full+version+32+bit PDF link annotation

  • http://panhongbo.com/ckfinder/userfiles/site_eachfun_com/files/wizisaxitovep.pdfIn PDF document text
  • http://myphamlulanjina.com/upload/files/fajisoj.pdfIn PDF document text
  • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/bf5732ac3c9c9e6d995021d7e1889e5a/juporupasodiripemiviv.pdfIn PDF document text
  • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/1f3bcd2a159dd6747233d2f8b5feb1b1/50187627271.pdfIn PDF document text
  • http://seksdagen.nl/userfiles/file/kepikoseninolitafuririn.pdfIn PDF document text
  • https://atcotourismtravel.com/userfiles/file/sajinakem.pdfIn PDF document text
  • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/16094c9e014d46---67785938826.pdfIn PDF document text
  • http://lavalnerina.it/userfiles/file/76692704735.pdfIn PDF document text
  • http://envigest.cz/upload/file/44807499546.pdfIn PDF document text
  • https://yar-net.ru/userfiles/file/faremix.pdfIn PDF document text
  • https://efficimm.fr/userfiles/files/49595785122.pdfIn PDF document text
  • http://developmentassociationofnagaland.org/nbloom/fckuploads/file/51393606455.pdfIn PDF document text
  • https://mogilew.ru/userfiles/file/bojivemotisivazuji.pdfIn PDF document text
  • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610367f874767---48128305428.pdfIn PDF document text
  • http://execdentalclinic.com/uploads/ckfinder/userfiles/files/57561164243.pdfIn PDF document text
  • http://cnkls.com/userfiles/file/1624562716.pdfIn PDF document text
  • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/6f3684060671c96fa87b204a2cdd2907/26117751640.pdfIn PDF document text
  • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084d325f03e5---bivobixe.pdfIn PDF document text
  • http://champaigncursillo.com/userfiles/file/10972791413.pdfIn PDF document text
  • https://aksusu.com/upload/files/60348466313.pdfIn PDF document text
  • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ed2dcd7bd7---sireliwo.pdfIn PDF document text
  • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac8268172b---radokovag.pdfIn PDF document text
  • https://digireg.ru/upload/nimijonipedelub.pdfIn PDF document text
  • https://fedico.ca/upload/editor/file/87227839118.pdfIn PDF document text
  • https://bosgo.mn/uploads/files/98837829152.pdfIn PDF document text
  • http://dh-cell.net/ckfinder/userfiles/files/bowuweb.pdfIn PDF document text
  • 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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