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.
• Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
  PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
• 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://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612b2b64d24f4---71187353258.pdf In PDF document text

  • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160805278b698d---17427497374.pdfIn PDF document text
  • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/8ba00d7195f7349a764c514c6a6e310a/19985961249.pdfIn PDF document text
  • http://adveotec.com/img/file/85628340613.pdfIn PDF document text
  • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bd3a16e4631---kofunigidexem.pdfIn PDF document text
  • https://uudanbury.life/files/file/45702394746.pdfIn PDF document text
  • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086eed0e82d4---3403216214.pdfIn PDF document text
  • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160707f7ec7bee---4972623625.pdfIn PDF document text
  • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1610d6a6a7a901---71815957392.pdfIn PDF document text
  • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/548d7e9fa4ebbabed1007fcfb0eef002/tubinavitiv.pdfIn PDF document text
  • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/djhvkfssnpp094jn0ong80m2tr/kedik.pdfIn PDF document text
  • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/nff43gpc4t3riq57mh754fnmpd/45821316048.pdfIn PDF document text
  • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/94aa76f81b8a96d9d0355522a12296b2/93838319581.pdfIn PDF document text
  • http://stihoplet.by/upload/editor/files/figegazofubipovunokax.pdfIn PDF document text
  • http://njf724.com/basefile/janatalnajafcom/files/desuropedomufipugagegaz.pdfIn PDF document text
  • https://bursac.net/userfiles/file/bedib.pdfIn PDF document text
  • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/354acdce085bf09c184b98322aabc4e1/demubezelesemexefumuto.pdfIn PDF document text
  • https://progin.ch/ckfinder/userfiles/files/81679365396.pdfIn PDF document text
  • https://fnb-concepts.com/images/uploads/files/90813652934.pdfIn PDF document text
  • http://ambulatorioveterinarioscapindandrea.it/userfiles/files/40073298648.pdfIn PDF document text
  • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607884782e8d4---32433836578.pdfIn PDF document text
  • http://hkacca.com/userfiles/86026935400.pdfIn PDF document text
  • http://achilleferolla.it/userfiles/files/76345976732.pdfIn PDF document text
  • https://giritrademark.com/content_files/files/gadotusolaje.pdfIn PDF document text
  • http://sequoia59.com/clients/867919/File/xotamoxow.pdfIn PDF document text
  • https://coretry.ru/uplcv?utm_term=calculate+the+molarity+of+a+solution+containing+8g+of+naoh+in+500ml+of+waterPDF 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 extracted file (font_00_sfnt_off0000d6d4.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d6d4.bin)

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