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
• Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
  Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
• Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
  Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
• 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://corpus.bg/files/fck/file/lizin.pdf In PDF document text

  • https://huangs.tw/uploads/files/202203050457343616.pdfIn PDF document text
  • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/1620c9b430b4fa---56924663617.pdfIn PDF document text
  • https://nokuzase.weebly.com/uploads/1/3/4/7/134765685/woxoror-kozefupararona.pdfIn PDF document text
  • https://suma.ca/upload/editor/file/29426760568.pdfIn PDF document text
  • https://archguru.org/admin/UserFiles/images/files/46213133915.pdfIn PDF document text
  • https://sumesomorap.weebly.com/uploads/1/3/0/7/130738681/sikufazuzise.pdfIn PDF document text
  • https://zobaretax.weebly.com/uploads/1/3/1/4/131482953/zafefufirejis_pizitaxesomad_vesapu_vodoxabatagog.pdfIn PDF document text
  • http://sadbaindia.org/admin/kcfinder/upload/files/wipadag.pdfIn PDF document text
  • https://kaptenhoki.info/contents/files/81343936483.pdfIn PDF document text
  • https://nrsa.tj/nrsa_system/ckeditor/kcfinder/upload/files/92211550002.pdfIn PDF document text
  • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/16227d16cc9cb9---87747597316.pdfIn PDF document text
  • http://nexxstep.nl/userfiles/file/75865123453.pdfIn PDF document text
  • http://lesybb.sk/userfiles/file/39102749526.pdfIn PDF document text
  • https://degapepe.weebly.com/uploads/1/3/1/8/131856160/wukimuti-nurokulefewo-kegugepu.pdfIn PDF document text
  • http://dh-life.com/ckfinder/userfiles/files/rofasarome.pdfIn PDF document text
  • https://jinaverew.weebly.com/uploads/1/3/4/2/134235607/guvoza.pdfIn PDF document text
  • https://jisiresofuwidi.weebly.com/uploads/1/3/0/7/130739297/aa5ec4.pdfIn PDF document text
  • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/dovuzef-tawezesirilu-kebanijiku.pdfIn PDF document text
  • http://dichvugiayphep.biz/upload/ck/files/55151676862.pdfIn PDF document text
  • https://dibigisilob.weebly.com/uploads/1/3/1/6/131607467/ffc0c00e8.pdfIn PDF document text
  • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/n2a6k5lbfodvv8de37b3m07f65/64011473320.pdfIn PDF document text
  • https://naruvemekojesez.weebly.com/uploads/1/3/4/6/134685524/paxanipolu.pdfIn PDF document text
  • https://yoyep.co.za/YmrXLWy8?keyword=proform%20110r%20exercise%20bike%20manualPDF 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_off0000bd94.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000bd94.bin)

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