Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d373922f0071b21…

MALICIOUS

PDF

72.9 KB Created: 2022-04-02 16:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-14
MD5: 8d5b12236b30b736c4ab6c7495a7cf87 SHA-1: dde2b1d73c3afc4bf2985430c63a6f71c46ac669 SHA-256: 5d373922f0071b21e9469c872d9dfdeb9589ba115f90f066fd76d2d85c8223db
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://sunuf.co.za/YmrXLWy8?keyword=briggs%20and%20stratton%20carburetor%20parts PDF link annotation
    • https://onecre.com/images/content/files/31350450868.pdfIn PDF document text
    • http://www.gpe-el.pro/ckfinder/userfiles/files/wegidajezenefubasepetig.pdfIn PDF document text
    • https://vanchuyenduongsat.vn/upload/files/takegol.pdfIn PDF document text
    • https://balmbeach.hometeamcorp.com/images/usr/pefirujiguropofos.pdfIn PDF document text
    • http://nanobubblevietnam.com/uploads/userfiles/file/94017367451.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622ddf9255600---40180803160.pdfIn PDF document text
    • http://salsainkonstanz.de/media/files/balewubiwumupemimoxu.pdfIn PDF document text
    • https://vefajuvajodal.weebly.com/uploads/1/3/6/0/136094574/zanini-domezuzu-mubogudagalila.pdfIn PDF document text
    • http://xboxheerlen.nl/userfiles/file/63223145392.pdfIn PDF document text
    • https://indiachristian.org/uploads/files/3845616549.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/81ade11f8a84bf620965f43b7d8dd543/28586518052.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d3a8cd027aa6242c08f59d57448596c2/rozozixatovinonetivaj.pdfIn PDF document text
    • http://webcertain.net/contentupload/fckeditorUploads/organization_/file/3331388989.pdfIn PDF document text
    • https://jfava.gemwareserp.com/userfiles/file/relalosuxamowofi.pdfIn PDF document text
    • http://isisorganizasyon.net/panel/kcfinder/upload/files/59761632884.pdfIn PDF document text
    • https://tusixifowidafoj.weebly.com/uploads/1/3/1/4/131437116/14d35ea31eb9d1.pdfIn PDF document text
    • https://guanlai.tw/uploads/files/202204010650326731.pdfIn PDF document text
    • http://melody-house.ru/kcfinder/upload/files/26596223351.pdfIn PDF document text
    • https://transmar.biz/ckfinder/userfiles/files/31248713373.pdfIn PDF document text
    • https://istanbularicilikfestivali.com/upload/ckfinder/files/nenijeguwi.pdfIn PDF document text
    • https://rudarizegofuk.weebly.com/uploads/1/3/4/3/134355262/3507051.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_off0000b8bf.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b8bf.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8BF 10936 bytes
SHA-256: 74115e26a80537f0feee5975784caaf1f76d20ee7b5cae1c888ad30c86853d7b
font_01_sfnt_off0000d1d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E6 16996 bytes
SHA-256: 7846a8a20891088b0414109c69e8b3152a2c4231e842db633d74744fa8fcd5c7