Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddca27de4964e7a…

MALICIOUS

PDF

76.2 KB Created: 2021-06-20 02:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: 80f9736b2b1be59497404dddfec58670 SHA-1: e363b2af2a008811e28c74cd16454097bffdc88e SHA-256: 3ddca27de4964e7a8f8aaf55f935f63a2be72a07c1184af6872e6f42b49e0c47
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://medvor.ru/uplcv?utm_term=present+perfect+and+present+perfect+continuous+explanation PDF link annotation
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608818d082f41---55829035255.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/nejirozuvagi.pdfIn PDF document text
    • http://essiac.cz/UserFiles/file/xipajagamijilug.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609d26e3c0c2f---33713681434.pdfIn PDF document text
    • http://oreade-breche.fr/userfiles/file/nigudafon.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/1b1c259049e3aebde5ca5796104c6a3b/vebomevulifuvuxirupumixaj.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/npjmfiaef5r2j8a33t071an378/10948524232.pdfIn PDF document text
    • https://mamo-tato.ro/userfiles/file/55729137055.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/5a6e695e4c68589f116e8f51c6044f6f/dudiwibokapudupe.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/minizugiripewaruzipabilox.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab3165c1b06---11044926708.pdfIn PDF document text
    • http://mp-hd.de/data/aktualnosci_imgs/file/giwudilozufi.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/bhjk6hp196dr68da8a6p3h3t3i/41227289637.pdfIn PDF document text
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/e0ebf5091120cc97cc00ca2d17894db9/92547817079.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/dcddaea25f1d1b55390ad8c7ce069dbe/52567462879.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b77e1ad731f---mukakez.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_off0000e886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE886 5216 bytes
SHA-256: c876b08af3679c7a5e850c48f6286e619760b53f5c5d570c81c6512f16e69448
font_01_sfnt_off0000fa59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA59 12428 bytes
SHA-256: ede98d2607f5f71d29ff7b4ceef6cd88973d7611cad45d2b657b3028d5571d20

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