Malicious PDF — malware analysis report

Static analysis result for SHA-256 19156577bba22f57…

MALICIOUS

PDF

81.6 KB Created: 2021-11-02 00:31:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: fd32631377e7341cea1a3c8543b7deb2 SHA-1: 29cf4b3fcbd8c96399e9b344329cffe3b14abb96 SHA-256: 19156577bba22f57921f56698ac924d9e7c3bccbb6db121e1ae068961eeca45c
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 http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617b07d068e15---86632993186.pdf In PDF document text
    • http://wamaeassociates.com/images/uploads/originals/file/sebaraminamisazewosopaja.pdfIn PDF document text
    • http://baby-daycare.com/uploads/files/202109180658213688.pdfIn PDF document text
    • https://jeanmarcrobion.fr/userfiles/file/99885368661.pdfIn PDF document text
    • https://hotelharmika.com/assets/userfiles/files/dazeniwekifupavofuzuni.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1614351b3835de---32089127345.pdfIn PDF document text
    • https://eledigitalpr.it/allegati/file/sitolojubab.pdfIn PDF document text
    • http://studioarclab.eu/userfiles/files/99091368211.pdfIn PDF document text
    • https://cancelaria.pl/galeria/file/lidujamirovogeduro.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/dda9eabde1772a3d5a5484027c9c9cb5/51332491200.pdfIn PDF document text
    • http://xn--80aafbjcazdrhzgiddbbcsg4l.xn--p1ai/pict/file/zebidifejemozosu.pdfIn PDF document text
    • https://www.frontieregypt.com/sites/all/libraries/ckfinder/userfiles/files/xizivisebek.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff7b5be184---wuvufigi.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/3bae34afec5edb42e48db530f3b26ef5/61021048800.pdfIn PDF document text
    • http://fanti-fitness.pl/uploads/assets/file/8387132236.pdfIn PDF document text
    • https://hkbca.org/UploadFiles/file/20211014135041175.pdfIn PDF document text
    • http://abyss.sk/userfiles/file/33669654984.pdfIn PDF document text
    • http://fertilityupdates.com/userfiles/files/fulorobokatevad.pdfIn PDF document text
    • https://g-stampo.com/pics/pages/file/sujunekupiju.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/455619d62c680f56a8579cb193deaf4c/dozobas.pdfIn PDF document text
    • http://patriabrno.cz/userfiles/files/11639335762.pdfIn PDF document text
    • http://tichdiem.surecare.vn/uploads/userfiles/file/gizupakironokunulilis.pdfIn PDF document text
    • http://vallovin.it/userfiles/files/24841274114.pdfIn PDF document text
    • https://cvsc.co/userfiles/file/88551554425.pdfIn PDF document text
    • http://tieuhocsondong.hoaiduc.edu.vn/ckfinder/userfiles/files/56205988682.pdfIn PDF document text
    • http://hferrynetworks.com/FileData/ckfinder/files/20211101_1E75558D3A64269F.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/oscUj7J0Gjw/uplcv?utm_term=poems+on+environment+by+famous+poetsPDF link annotation
    • 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_off0000d97b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97B 10896 bytes
SHA-256: 8470aa25d7a3f657fc1ca49ce1b3edb031b8a53c26c04e214876fa62a201d978
font_01_sfnt_off0000f28a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28A 17688 bytes
SHA-256: 167e8f4e28049d65553a9f7969a20f852c04c2057797aeacc62336670e444ef6
font_02_sfnt_off00012053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12053 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1