Malicious PDF — malware analysis report

Static analysis result for SHA-256 78234e8c896cc3e5…

MALICIOUS

PDF

77.3 KB Created: 2021-10-26 08:57:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: 7c6108be846542bc14758ecea6a430a7 SHA-1: 6de31d0b8069b3722bb3ac9ea6d2b9e338de3564 SHA-256: 78234e8c896cc3e5e52c2c57fdbd16e78e5349d3527bac844943d9cf3cb6fea1
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • 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 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://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/rq39qp3cu94lv1k8rtv3radvq5/jugalirar.pdf In PDF document text
    • http://kahsport.cz/userfiles/file/tunaledapuzu.pdfIn PDF document text
    • https://e-uchebnici.com/img/file/vewabitijadowanaveze.pdfIn PDF document text
    • http://surestegc.org/documentos/file/6690929286.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/c62865256f719e04d0783b607e1820a7/ximalo.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/6629d3e86c8696a07f10f2251bfdcf21/61181655936.pdfIn PDF document text
    • http://glavis.biz/userfiles/file/15733900698.pdfIn PDF document text
    • http://akifkasaboglu.com/esatfisek/images_upload/files/mesibi.pdfIn PDF document text
    • http://jessica.yelivery.com/cote_dor_import/admin/ckfinder/userfiles/files/90409484216.pdfIn PDF document text
    • http://dobrejaja.com/Upload/file/54530770125.pdfIn PDF document text
    • http://ecosdaliberdade.com/ckfinder/userfiles/files/ziloxexoxojiwep.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16172ed297cfbb---75232284485.pdfIn PDF document text
    • https://studiecarriere.it/uploads/file/92098568659.pdfIn PDF document text
    • https://echipamente-scule.ro/userfiles/file/49604262535.pdfIn PDF document text
    • http://www.sloepverhuur-debiesbosch.nl/upload/files/17301758936.pdfIn PDF document text
    • http://abnicum.com/files/file/gifelizadoxivoxebi.pdfIn PDF document text
    • http://krakowska98.com/zdjecia/fck/file/duzod.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1615fa65078e55---85396749609.pdfIn PDF document text
    • https://sahyadrisevasanstha.in/userfiles/file/60907538231.pdfIn PDF document text
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/a0ea26096986eaddac0c2f5a04b5c3a3/difameforivoruwud.pdfIn PDF document text
    • http://goldartline.ua/userfiles/file/99592590274.pdfIn PDF document text
    • http://union.travel/ckfinder/userfiles/files/tawivixugiw.pdfIn PDF document text
    • http://tycoonmedical.com/userfiles/file/54538015095.pdfIn PDF document text
    • http://www.solarwindependence.com/ckfinder/userfiles/files/maweluvanavod.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/1hHberoKktI/uplcv?utm_term=fort+bragg+to+gualalaPDF 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 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_off0000ca8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA8A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e2a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A1 10004 bytes
SHA-256: becbfd17bcb94e218eba1f338b644510f13de758d404f9b11d2c5d2dedcd1f06
font_02_sfnt_off0000f8ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EE 17912 bytes
SHA-256: 5960bcc7f38e93ad33cffb69f777de04f574de69724d1c6efca44eb28d7747ba