Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd35ec159d61bf0…

MALICIOUS

PDF

94.3 KB Created: 2021-06-26 05:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-25
MD5: 743b551b24aea506b9d46d7e0bc0d56d SHA-1: 57e98d397dcd57fa0098b807a6e25034c1de45f4 SHA-256: 3dd35ec159d61bf05397d95107914fd92b0d4ad755d0ded4630b9237c5c614ac
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9806

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://drafthe.ru/uplcv?utm_term=gre+argument+essay+examples PDF link annotation
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607330b8c82d0---36015371486.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606f643808a1c---setowugudiritimezowuzik.pdfIn PDF document text
    • http://kiemtoanhaiphong.vn/upload/files/seluxewu.pdfIn PDF document text
    • http://reanda.com/jingkelun/userfiles/files/20210604014823.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/1f2620aaaf96fd697794ec58ae9ac30d/40449954103.pdfIn PDF document text
    • http://camionespanamericana.com/userfiles/file/jomum.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160afcc9fd5e61---zivixusofikesokewinadir.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/3aed69d5ec7a5736f52e32f226a152f2/44177322302.pdfIn PDF document text
    • http://hopkins1983.com/clients/861771/File/99119032667.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/96b82a3685a1f48c7fca79d7555f3f28/95031780277.pdfIn PDF document text
    • http://hydrem.ru/images/file/78228158652.pdfIn PDF document text
    • http://srsheicha.com/uploadfile/file/12344571359.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c4db2fdae18---32300419499.pdfIn PDF document text
    • http://grappin-annat-como.com/userfiles/grappin-annat-como.com/file/duwezamazodevilitudigesat.pdfIn PDF document text
    • http://cardealer-space.com/js/upload/files/58591366883.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/18cc43a9df5c6a1a545dab151d2c452a/92528165934.pdfIn PDF document text
    • http://kelvista.lt/images/files/gepumujomazo.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16086fdf2bb487---66737222731.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/971006729fbef8cd1de21adba737511c/feragoverujufotibowarika.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/5qon97rtugsu02hioumjdor2md/wabavezikepavibejekikub.pdfIn PDF document text
    • https://lesartsdansmonjardin.com/userfiles/file/20210525035442.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3791a44626---62083557800.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d15f83c8c---tewesokuxuzajetapudora.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160882b3bc45a5---83977804970.pdfIn PDF document text
    • http://maihome.hu/admin1/file/xevobuvegulapixokipu.pdfIn PDF document text
    • http://rajhansnursery.com/userfiles/file/wafixulitilaxozisavok.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/5qvk90ved2ljtipu6lmf55bhv1/kisufujazowo.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_off00010dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DFA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001260c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1260C 17256 bytes
SHA-256: 1a3c83ff4fd96016758bb59f52f57552df0cfb301c08b457334256bb48b2ac27
font_02_sfnt_off00015312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15312 10740 bytes
SHA-256: 5aca90f533f1b6989efbee2b3393e3d24e905a17aa89731895679ef6cfbf949f

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