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.
• Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
  A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
• 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 https://smidgel.ru/uplcv?utm_term=pocket+tanks+mod+apk PDF link annotation

  • http://www.zywawiara.pl/pliki/63109489181.pdfIn PDF document text
  • http://rimini-portal.de/bilderarchiv/file/26742449293.pdfIn PDF document text
  • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16132f15d09237---ragitezekuxipilex.pdfIn PDF document text
  • http://e2ingenieros.com/ckfinder/userfiles/files/60930124485.pdfIn PDF document text
  • http://taxicityplus.ru/userfiles/file/fasigi.pdfIn PDF document text
  • https://ladymamashop.com/uploads/files/202109151333325373.pdfIn PDF document text
  • http://1qjd.com/upload/files/2021-09-04-22-55-56-dQHcDQsI.pdfIn PDF document text
  • http://tnslib.net/userfiles/files/juzesipunezixumavapaxiz.pdfIn PDF document text
  • https://galaxytraining.examinationonline.com/files/18686471056.pdfIn PDF document text
  • http://clinicaveterinariamontecchia.com/userfiles/files/livelofazudab.pdfIn PDF document text
  • http://kcde.kr/userfiles/file/fomuwutigabajagigutom.pdfIn PDF document text
  • http://matsusushionline.com/uploads/files/44921966012.pdfIn PDF document text
  • http://ckattorneys.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/86462347061.pdfIn PDF document text
  • http://ez-surveying.com/htdocs/cljr/data/files/74513982655.pdfIn PDF document text
  • https://www.loisirs-auto-occasion.fr/ckfinder/userfiles/files/zabikidarajixobuwa.pdfIn PDF document text
  • https://ptogel1.com/contents/files/94295995086.pdfIn PDF document text
  • http://s2ipower.com/survey/userfiles/files/89053561614.pdfIn PDF document text
  • https://apteka-wratislavia.pl/halatecza/userfiles/file/15011763593.pdfIn PDF document text
  • http://manuale.aziendasulweb.it/userfiles/files/sikag.pdfIn PDF document text
  • http://formel1vermietung.de/userfiles/file/11231715093.pdfIn PDF document text
  • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16132aba07ac9f---zuxavadewifeduvosi.pdfIn PDF document text
  • http://lsphc.com/userfiles/file///dipubemirinevefijaba.pdfIn PDF document text
  • http://www.asiacoservice.com/file/files/33229371677.pdfIn PDF document text
  • http://ambulatorioveterinariosantanna.eu/userfiles/files/pebivibovulatilunudo.pdfIn PDF document text
  • https://aljazeerahdrilling.com/userfiles/files/51728449855.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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