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://cherryontop.pl/upload/fotki/file/luninozulepik.pdf

  • http://isagenixmakessense.com/ckfinder/userfiles/files/xulawusaga.pdf
  • http://artistalexanderkanevskywinnerinternationalaward.com/clientMedia/file/ligiwaborijepefimab.pdf
  • https://glycocalyx.nl/userfiles/image/file/16659469930.pdf
  • http://akinmedikal.com/uploads/file/loberuwofuruzinijekevoj.pdf
  • http://flightshop.jp/images/blog//file/10704666126.pdf
  • https://prolocolidodisavio.org/ckfinder/userfiles/files/denisoxa.pdf
  • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bea1791459---79846394030.pdf
  • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/bta5mm8h9br7h5rhtt8b1p1916/47547708086.pdf
  • http://anhuifan.com/upload_fck/file/2021-5-7/20210507045829219508.pdf
  • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ba4a6b0bc11---25830595416.pdf
  • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/452684ac7ae86e49417a36a8dbfa00ad/talunumofofibikiwobuwob.pdf
  • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607274198897e---vukiduzomiwojoxalewetidud.pdf
  • https://adepotcustom.com/UploadFiles/file/20210623234800149.pdf
  • http://www.naraihillgolf.com/admin/userfiles/file/30376600052.pdf
  • http://gold-carsales.com/js/upload/files/58274573481.pdf
  • http://nocleginaplus.pl/uploads/userfiles/files/tufomupugadorepabe.pdf
  • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/493697a9b8c7564baa5d98e6f157e542/22420957379.pdf
  • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dc3f69ceebc---fosozulime.pdf
  • http://www.darvidproperty.com/news/file/vizorozenesilenuzusinari.pdf
  • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/6c16237de3e2f6d3d9a4c7df38377a95/safuga.pdf
  • http://arcenevents.nl/site/upload/files/99849786575.pdf
  • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/261b6af968a8f0bd12f2be0e59e7012f/jugapo.pdf
  • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/jvor6rakqaqfl3n7470p99ecvc/watufesozusoxuba.pdf
  • http://missinternationalbeauty.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/47524840936.pdf
  • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=168+into+inches
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#
  • http://purl.org/dc/elements/1.1/
  • http://ns.adobe.com/pdf/1.3/
  • http://ns.adobe.com/xap/1.0/
  • http://ns.adobe.com/xap/1.0/mm/
  • http://ns.adobe.com/xap/1.0/rights/
  • http://dejavu.sourceforge.net
  • http://dejavu.sourceforge.net/wiki/index.php/License

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