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.
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• 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://chcial.ru/uplcv?utm_term=robbery+bob+mod+game PDF link annotation

  • http://amoy-art.com/Upload/file/53416062216.pdfIn PDF document text
  • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144242f840b5---gilifikevipudis.pdfIn PDF document text
  • https://vinocastillo.hu/editor_up/96802444258.pdfIn PDF document text
  • https://smartcrm.cloud/upload/files/69983693784.pdfIn PDF document text
  • http://innotec-industrie.be/userfiles/file/viruzodun.pdfIn PDF document text
  • http://szyldkj.com/luodan/images/userfiles/file/27361591018.pdfIn PDF document text
  • https://orsam.org.tr/paketler/ckfinder/dosyalar/files/mepilatibo.pdfIn PDF document text
  • http://remaining-mc.de/userfiles/file/43126853267.pdfIn PDF document text
  • http://telegid.tv/userfiles/files/73673809204.pdfIn PDF document text
  • http://www.thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/25872580147.pdfIn PDF document text
  • http://fishtech.org/uploads/userfiles/file/file/86098352463.pdfIn PDF document text
  • http://scantech3d.com/files/19185812794.pdfIn PDF document text
  • https://pasarantogel.com/contents/files/zabub.pdfIn PDF document text
  • http://slbreakingnews.com/ckfinder/userfiles/files/73447125936.pdfIn PDF document text
  • http://qdcmd.com/data/files/jedoxikevovogimonumifu.pdfIn PDF document text
  • https://absoluteanytime.com/media_file/files/files/wuzibexikiwebogabesasiz.pdfIn PDF document text
  • https://art4you.sk/editor_uploads/system/files/66718299731.pdfIn macro / runtime command snippet
  • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612edc96b5b45---2314285300.pdfIn PDF document text
  • https://atvatextile.com/upload/ckfinder/files/duvomarikaw.pdfIn PDF document text
  • https://westhygiene.hu/editor_up/negesujiwi.pdfIn PDF document text
  • https://gagiongvitgiong.com/ckfinder/userfiles/files/zofaxamu.pdfIn PDF document text
  • https://cantellodetersiviprofessionali.it/uploads/file/86032340111.pdfIn PDF document text
  • http://universalthailand.com/images/uploads/ckfinder/files/10336984608.pdfIn PDF document text
  • http://epmresearch.org/userfiles/files/lerikoxineruzovomoso.pdfIn PDF document text
  • http://zamaro.cz/images/fcke_files/file/90220697712.pdfIn PDF document text
  • https://zzwgjx.com/d/files/40102442665.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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