Malicious PDF — malware analysis report

Static analysis result for SHA-256 7936ada757e2826b…

MALICIOUS

PDF

81.8 KB Created: 2021-10-24 10:07:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: dd4848635f9d98d6d65a968ab80c5f36 SHA-1: af258be4ef17d9c1f556177bb44468d1507566e0 SHA-256: 7936ada757e2826b2af6cb4c672aa7bf01b49efa378d21380a2e2377e91319be
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://synerhu.ru/uplcv?utm_term=roblox+mod+fly+hack PDF link annotation
    • http://cvsc.co/userfiles/file/1014310985.pdfIn PDF document text
    • https://qwert5.com/psum/admin/userfiles/file/92308996746.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/sulurozavudewaloxikan.pdfIn PDF document text
    • http://fanghsin.com/uploads/files/202109211953209044.pdfIn PDF document text
    • http://studiotecnicoligioni.com/userfiles/files/gozokujadadukekaxapim.pdfIn PDF document text
    • http://tolltisztitas.eu/userfiles/files/sezemoxele.pdfIn PDF document text
    • http://cbgnfinance.com/userfiles/file/duxuzorexoxafexofi.pdfIn PDF document text
    • http://kajo-frings.de/userfiles/file/39440051036.pdfIn PDF document text
    • http://4els.ru/uploads/images/files/taxepexisival.pdfIn PDF document text
    • http://rockhouseschool.com/rockhouse/uploads/files/75914244711.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/16155a461ba792---kejubowifez.pdfIn PDF document text
    • https://constructor.dilen.top/upload/files/68772860840.pdfIn PDF document text
    • http://minhnguyenvn.com/uploads/userfiles/file/repopo.pdfIn PDF document text
    • http://mbjarrahi.com/UploadedFiles/New/file/64309999747.pdfIn PDF document text
    • http://stylekd.ru/files/55816399081.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616276593f41b---32800957246.pdfIn PDF document text
    • http://uleshuzatshop.hu/files/file/80763486840.pdfIn PDF document text
    • https://lrsinc.co/userfiles/file/78898122660.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16167d4983f99b---wazamudiloniwol.pdfIn PDF document text
    • http://mamtaniketan.com/userfiles/file/nenopuwazezelanej.pdfIn PDF document text
    • http://abcgsgeds.friendship-match.com/upload/files/gajosadutabaxel.pdfIn PDF document text
    • https://hongmao.tw/uploads/files/202109041953314112.pdfIn PDF document text
    • https://fetogram.ir/images/upload/files/19879606472.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16174ee5366124---85728627867.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c93937a74c---96618777171.pdfIn PDF document text
    • http://www.mbk-montage.nl/ckfinder/userfiles/files/jadujuzejiponemanud.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_off0000db60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB60 10540 bytes
SHA-256: 9ccb3dfc3d67cbe46e2277f401e9b7a394c2efe5fe3e17531d8a82c17c0e0e0a
font_01_sfnt_off0000f36f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36F 17628 bytes
SHA-256: a9f8ed2977e70a728e3f55d2a0cb59291be6d9336141d697b1a45d529a8acf6b
font_02_sfnt_off0001217c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1217C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1