Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd75545b7db25fe4…

MALICIOUS

PDF

77.6 KB Created: 2021-06-09 01:42:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 1000550d7959a605640fddd1b0b0c57e SHA-1: 02245381344f700c00a50ce28bbfc120aa7fca42 SHA-256: cd75545b7db25fe40b45118002bfafaecf3d0f95f67e5bd93aeabab1fc6de9df
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://oniceh.ru/uplcv?utm_term=class+7+math+solution+book+pdf PDF link annotation
    • http://atut-biuro.com/uploaded/file/58599573181.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd08130c99---jenelikirorofuvot.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/d7de3ca7d9849472418747dbbcd0ac8e/tibuwijerokebuki.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/vkdhfepadfbhst46o7ihet2qrd/16416710203.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160afac93533d9---78467805937.pdfIn PDF document text
    • http://kagoshimakojintaxi.com/userfiles/file/79132877549.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/60a7749b1571ab9b9e45ce5524531800/91743757427.pdfIn PDF document text
    • http://majubesar.info/contents//files/68044669579.pdfIn PDF document text
    • http://ekolojikweb.net/upld/userfiles/file/bugagaxibivajesiresozili.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/22630787665.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/3ldmg5icvl2ad0986n0qonojel/55715483380.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a56b50378c6---19837274077.pdfIn PDF document text
    • http://chinajessie.com/seadata/data/uploads/img/file/162206597661.pdfIn PDF document text
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/1ojdgkb8rh9ira6r7jgeddcd0r/55052820016.pdfIn PDF document text
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/72c837676cb12e953dfbe67f77e005df/9317720549.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b99725f14f---diwipan.pdfIn PDF document text
    • http://indovinandoilmondo.it/themes/userfiles//files/79639853965.pdfIn PDF document text
    • https://xo-sound.ru/userfiles/file/vemodizufoputada.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF429 5376 bytes
SHA-256: 539571d3edabe35d5cc117d22b11a265da6391a1305072ebdb38bc05890fa1e6
font_01_sfnt_off0001064c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064C 10276 bytes
SHA-256: 90303ca193631e314f587153b8b7395bf7a6a393413f7dc5f6cba532beeccedb

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