Malicious PDF — malware analysis report

Heuristics 9

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
  Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://cructi.ru/uplcv?utm_term=gta+sa+lite+apk+data+download PDF link annotation

  • https://pactforfamilies.org/ckfinder/userfiles/files/81090056970.pdfIn PDF document text
  • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134378320b8e---83033936559.pdfIn PDF document text
  • https://wisestudentz.com/userfiles/file/94968409294.pdfIn PDF document text
  • http://manpukuorder.com/uploads/files/39592420597.pdfIn PDF document text
  • http://richmore.kr/uploadfile/fckeditor/file/xidiseretuzarezebumixi.pdfIn PDF document text
  • https://stthomasorthodoxchurchsouthpampady.com/userfiles/file/66611445069.pdfIn PDF document text
  • http://propertiesforrent.com/userfiles/file///wokikilazoke.pdfIn PDF document text
  • http://prochem.vn/images/uploads/files/33878209161.pdfIn PDF document text
  • http://orderkai.com/uploads/files/4364635396.pdfIn PDF document text
  • http://logtech.cz/foto/Image/file/fuserofilazujonafetip.pdfIn PDF document text
  • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161462fa6d44bf---61090204600.pdfIn PDF document text
  • https://et-auditing.com/userfiles/files/21653384666.pdfIn PDF document text
  • http://begemot-rus.com/uploadfiles/file/2021090616253073499.pdfIn PDF document text
  • https://trompis-tondschungel.de/userfiles/file/54637682619.pdfIn PDF document text
  • http://nsk-nalogov.net/upload/files/81424885519.pdfIn PDF document text
  • http://hyundaihungthinh.com/uploads/images/files/defofeperaloxaveginakode.pdfIn PDF document text
  • https://best-label.com/upload/files/47536893333.pdfIn PDF document text
  • https://westhygiene.hu/editor_up/dotatilujapaxime.pdfIn PDF document text
  • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16149150e41103---5194295444.pdfIn PDF document text
  • https://doina.md/fckeditorfiles/file/15946190592.pdfIn PDF document text
  • http://mayepnuocmia.vn/data/ckfinder/files/gemawoxivifikatakoduvogim.pdfIn PDF document text
  • https://globalcareerclub.com/FCKeditor/userfiles/file/guwimepufuzufasub.pdfIn PDF document text
  • https://dichocungtoi.com/userfiles/file/4074175113.pdfIn PDF document text
  • http://farmaciacogliate.it/userfiles/files/8927588000.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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