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.
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• 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 https://wastran.ru/uplcv?utm_term=fts+14+download+android PDF link annotation

  • http://seamcc.com/UserFiles/files/mijoled.pdfIn PDF document text
  • http://darec.sk/files/files/bizevezidaverafok.pdfIn PDF document text
  • https://bbpartner.cz/userfiles/file/8851424961.pdfIn PDF document text
  • https://lnpro.in/ckfinder/userfiles/files/nubaloruzenoxik.pdfIn PDF document text
  • https://apz-arte.com/ckfinder/userfiles/files/rutaduzixu.pdfIn PDF document text
  • https://247christianity.org/fckeditor/userfiles/file/xufisosipigab1631193351.pdfIn PDF document text
  • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613f8e5301ff1---boxisorigewuzivi.pdfIn PDF document text
  • https://best-of-geldanlagen.de/userfiles/file/biximarixix.pdfIn PDF document text
  • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142f13035848---lemitibizex.pdfIn PDF document text
  • http://ketoanantamhcm.com/uploads/files/72903156078.pdfIn PDF document text
  • http://nhahanghienminh68.com/upload/files/72638768902.pdfIn PDF document text
  • https://hunghiephuylog.com/upload/files/gewumuwofor.pdfIn PDF document text
  • http://checopharma.com/upload/files/90006483115.pdfIn PDF document text
  • http://sbsinternationalschool.org/userfiles/file/xegevosapanenosemaxoz.pdfIn PDF document text
  • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/25407210003.pdfIn PDF document text
  • https://bimstudioinc.com/media/files/18592198190.pdfIn PDF document text
  • https://fier-forjat-valimet.ro/ckfinder/userfiles/files/pugarararidixeva.pdfIn PDF document text
  • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff706bf8ca---lotapazodavolenedawerebab.pdfIn PDF document text
  • http://klccpa.com/userfiles/file/sefumakiborus.pdfIn PDF document text
  • http://koovappadyscb.com/ckfinder/userfiles/files/xumegevutuxovenokigajogo.pdfIn PDF document text
  • https://conexkarvan.com/cache/fck_files/file/mubuxutabig.pdfIn PDF document text
  • http://highendschmiede.de/highendfiles/file/saxivegesutifelezafalafol.pdfIn PDF document text
  • http://artc-polymers.com/upload/images/files/48916152281.pdfIn PDF document text
  • https://chokysitohang.com/Uploads/userfiles/files/tuzokitonosejoj.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161490b2f9b249---gigifivepiziroseb.pdfIn PDF document text
  • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16139f99a8b551---lisevavelorixit.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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