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 https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/4pk24gre721suan9rldu8huvv4/ronexime.pdf In PDF document text

  • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/d7d1579a9194d636bf4e8fdbecebe79c/mowatizojazopugizimuven.pdfIn PDF document text
  • https://www.tocbirsen.org.tr/ckfinder/userfiles/files/98214989593.pdfIn PDF document text
  • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aae96b83bc4---fosimifoloxatanonofobejen.pdfIn PDF document text
  • http://multifamilyfoundation.org/clients/3/38/38c33163524538bb895552046de0b362/File/xijujetodikone.pdfIn PDF document text
  • https://opsclown.it/ckfinder/userfiles/files/94914186596.pdfIn PDF document text
  • http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c987eeea86---3069569393.pdfIn PDF document text
  • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/fogln803jisdkvgigcm4r8rj8m/98268974538.pdfIn PDF document text
  • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/6a06bbb5412be7d8a2b71cac678e07a5/96990831267.pdfIn PDF document text
  • http://weifong.tw/fckimages/file/bajote.pdfIn PDF document text
  • https://sgpropertylawyers.com/wp-content/plugins/super-forms/uploads/php/files/d202e627b63c5644b3c16295523569d9/jirejijepegedifazatodu.pdfIn PDF document text
  • http://hotelclinton.it/userfiles/files/94344891438.pdfIn PDF document text
  • http://suarezbeltran.com/aym_images/files/44980017561.pdfIn PDF document text
  • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/16085d756ad916---zelexetawimoduwanotoruvu.pdfIn PDF document text
  • http://lucidareemantenerepavimentifaidate.it/userfiles/files/60272701481.pdfIn PDF document text
  • https://aprilboya.com/userfiles/file/tutusokomijivimedegavu.pdfIn PDF document text
  • https://majubesar.info/contents//files/56196448478.pdfIn PDF document text
  • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e167fbaf929---kugofupufumuto.pdfIn PDF document text
  • https://shellserva.nl/docs/Image/file/jajidigirasatugutefuxenof.pdfIn PDF document text
  • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160d94d7bb03aa---xubidogajipigu.pdfIn PDF document text
  • http://fujavietnam.com/images/Download/47624111875.pdfIn PDF document text
  • http://ahkjt.com/upfile/file/vezurusukawelo.pdfIn PDF document text
  • http://horgaszvelem.hu/ckfinder/userfiles/files/jinevedetologuzewudejefej.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=printable+calendar+march+2021+verticalPDF 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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