Malicious PDF — malware analysis report

Static analysis result for SHA-256 425b9a97c28c8c1e…

MALICIOUS

PDF

73.1 KB Created: 2021-08-28 13:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 0b639bf184e5ce8451f5cade82f649d5 SHA-1: 589ea6d0dae88f1621ac820e95d2b53f55b824a9 SHA-256: 425b9a97c28c8c1ea91cee1ef9182039f18516452a437bc84487033b092d5d83
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607c0373eb2e8---murekix.pdf In PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/b444a5c067e4e32fb9cf80daadd1ca8f/80779645105.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/3162dc691f9102e7f66eddd31339088a/20280178571.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/g4q6ad57gjt3nvj0sq0n8ncvn4/69896484768.pdfIn PDF document text
    • https://arte-salon.ru/upload_picture/64515240212.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/96e61276888ea84aa8fc4ea57871a1c2/sigamozizogetenupos.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/e7660f08390f85890ca6ac368cfe7b72/saladesujikelimasevakuwe.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bd15901ba3d---31830650557.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/46327083199.pdfIn PDF document text
    • https://flavio-tonon.it/public/file/85641542001.pdfIn PDF document text
    • http://zkojicin.cz/userfiles/file/4471227747.pdfIn PDF document text
    • https://sofupingame.com/calisma2/files/uploads/92205413696.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607600c3d3470---mizunawujug.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/76ae579a6d97bd739f4c341125bbee18/54390082421.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d89e8c6ac---tejejedikodesipad.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/161137f51e88b8---muzekozagoxotemivuxogi.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021051820013547.pdfIn PDF document text
    • http://dhsclassof70.com/clients/d/d1/d13f49183e6b2ef720c1f353b43de0f2/File/gefoxuvalija.pdfIn PDF document text
    • http://yachtandgulet.com/userfiles/file/gobobedarodulijana.pdfIn PDF document text
    • http://cungcapluonech.com/upload/files/3237175596.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/c0df67a2e51bddb17c4e46b9a4655571/kelij.pdfIn PDF document text
    • https://barcelona-health.com/files/galeria/files/94022472167.pdfIn PDF document text
    • https://ystechpro.com/nbloom/fckuploads/file/tokelufanasutalajatezek.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=level+133+word+connectPDF 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_off0000bc6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC6E 10272 bytes
SHA-256: 6a7d824707257edb0a617f1d2b1ece97be2e4589b6497d25c92452d1086ef1ee
font_01_sfnt_off0000d3c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ebd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD8 16268 bytes
SHA-256: 098987d213899baffb58113786e01b3b71e654da727b3c166f4a7d546552cc8b