Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f11b6dc78846d0…

MALICIOUS

PDF

139.7 KB Created: 2022-01-25 15:20:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: 2ffbb17077133782f6194a44121319c8 SHA-1: a07929d69eb29a6b00b50b5435c4d69cf2d06509 SHA-256: a4f11b6dc78846d099b9bce990f0c7a3d0608871ffee5a371162239cd3437084
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9726

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://norin.co.za/XSRYdR1H?utm_term=sony+annual+report+2018+pdf PDF link annotation
    • http://health-bridge.in/upload/file/wadusokisamenegas.pdfIn PDF document text
    • https://toocapen.com/files/2624799014.pdfIn PDF document text
    • http://aryajob.com/user_upload/file/55675298731.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/161a8e07574ecb---totunewodojodewuk.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1619a39d3e0cd9---ralerenowotuberigijam.pdfIn PDF document text
    • http://wecans.net/_UploadFile/Images/file/63673304848.pdfIn PDF document text
    • https://masteranalog.com/userfiles/file/wizebif.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/88884ab2b9872297b13a6fb969d51a92/32295037661.pdfIn PDF document text
    • https://mimpi1pusat.com/contents/files/52559370428.pdfIn PDF document text
    • http://ipllaser.in/uploads/73780597795.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1616b85fa44cb4---fuvoreditulizunutuxulow.pdfIn PDF document text
    • http://nscenter.cn/upload/files/rikaz.pdfIn PDF document text
    • http://georgekoldun.com/var/upload/file/55694006459.pdfIn PDF document text
    • http://photonart.nl/phpcmsys/file/zimewojobubi.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/161831fb2932c4---6254436177.pdfIn PDF document text
    • http://efuturesthai.com/uploads/files/kifexabotufi.pdfIn PDF document text
    • https://mimpishio1.com/contents/files/97191480547.pdfIn PDF document text
    • http://szjglaw.com/uploadfile/file/2021111019041773499.pdfIn PDF document text
    • http://brain-sh.tw/upload/file/woseborefenoromokepugi.pdfIn PDF document text
    • http://lonsdale.ee/tipikas/uploads/sisupildid/77580087090.pdfIn PDF document text
    • http://terrietanaka.com/library/files/30762480945.pdfIn PDF document text
    • http://www.park-seversk.ru/other/js/ckfinder/userfiles/files/suwuzevupore.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 extracted file (font_00_sfnt_off0001c392.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001c392.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001c392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C392 11020 bytes
SHA-256: 530a43329d55367ea6ff739568a76510b5b7b3aba9e42712858dd6d7945c68a2
font_01_sfnt_off0001dd7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DD7D 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0001f41c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F41C 16848 bytes
SHA-256: 53cc8117d7f68259a06b9adfbd8610e20de5496e89a7d7d1bffd32565547c005