Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8c121a13b0bc3f…

MALICIOUS

PDF

74.5 KB Created: 2021-09-30 19:56:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 07ae417966ddb34d40834a18130ed9ee SHA-1: 4d40d63b8dfbb98e93da7d69bc4d69b3c0d9ba73 SHA-256: 5d8c121a13b0bc3fecbcdf6137b940abe13c1858f56084edbdc7b99dcea933f8
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • 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 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://cructi.ru/uplcv?utm_term=how+to+transfer+files+from+android+to+computer PDF link annotation
    • http://lavalnerina.com/userfiles/file/seselubinomozu.pdfIn PDF document text
    • http://holland-ex.com/images/blog/file/8419400533.pdfIn PDF document text
    • http://gardensyellowcab.com/admin/images/file/godazanodenuzedesikid.pdfIn PDF document text
    • http://captaincook.hu/userfiles/file/62118552982.pdfIn PDF document text
    • http://dentalweek.eu/userfiles/files/kibalunu.pdfIn PDF document text
    • http://www.peritaonline.es/ckfinder/userfiles/files/jobesexixugixefo.pdfIn PDF document text
    • https://olivermilk.vn/tctt/sites/aaa/file/82100432224.pdfIn PDF document text
    • http://dominant.name/userfiles/file/sapefelosenilovoxuwovuv.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16148997b187b5---kidutinelo.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1614b8427655c9---33336872105.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133cb29acdab---3185463983.pdfIn PDF document text
    • http://blossomtour.net/FileData/ckfinder/files/20210922_80CFA292A0C18894.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/36651284061.pdfIn PDF document text
    • http://www.ppk-kp3k.kkp.go.id/ver2/extra/ckfinder/core/connector/php/media/ckfinder/files/pezawituxufazularogepux.pdfIn PDF document text
    • https://larrialdiak.es/files/galeria/files/saputidusexegopisivanubu.pdfIn PDF document text
    • https://tranduongauto.com/app/webroot/files/images/pages/files/govilizakamutiwul.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16148a507e3a33---98826757385.pdfIn PDF document text
    • http://mawratanews.com/armedia/uploads/files/saledeno.pdfIn PDF document text
    • https://noursportevents.com/wheelmarine/userfiles/file/vonivazofawepinevur.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/lq878us82grkatni4epa4gr8kv/67997632439.pdfIn PDF document text
    • https://aokman-drive.com/d/files/togefopanigoxujedepabuxe.pdfIn PDF document text
    • https://stephan-kratt.de/data/reiterhof/userfiles/file/naremasikavilez.pdfIn PDF document text
    • http://paykaaluminiya.ru/ckfinder/userfiles/files/78151122555.pdfIn PDF document text
    • http://msnladyboy.com/ckfinder/userfiles/files/12868277209.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA53 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d26a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD26A 10956 bytes
SHA-256: 8d052faf99714adc6449184314da8f106928506847a12bc7a059bda1c3f63c47
font_02_sfnt_off0000ebd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD5 18468 bytes
SHA-256: 03838c0687572fd28149f55d297a21ce7b1952e25751f34b5de689471de81c4b