Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3ec6ebad38516f…

MALICIOUS

PDF

73.2 KB Created: 2021-10-12 03:03:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 4328fbbd5bad08a0637a924320a3ee39 SHA-1: 0f8ca24ca68251799468df0cac8c2d1b74964cfa SHA-256: 4e3ec6ebad38516fdeba76c2c1db2f89c95bb41b9e5cad89323a2354bb368594
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://too.kg/wp-content/plugins/super-forms/uploads/php/files/573fb0ee354cab72c39e7e2f3dc49be4/xerome.pdf In PDF document text
    • http://carrasvilla.es/uploads/files/vegizubulewo.pdfIn PDF document text
    • https://tannhatviet.vn/upload/files/kamelajuvolem.pdfIn PDF document text
    • http://camwater.org/media/files/bapisowigikodevodit.pdfIn PDF document text
    • https://hanedantoptan.com/upload/files/38795893958.pdfIn PDF document text
    • http://e-skala.pl/userfiles/file/57844482858.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/161405c65ae04e---ginibexe.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/11f873ff9f7a88874eb346e0159f32ff/69201401722.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/423cd5b52902c6ecd1c2cc9395a76781/potolaxuwa.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1614139fcbf3fe---71250797586.pdfIn PDF document text
    • http://flexa.cz/docs/file/35493498972.pdfIn PDF document text
    • https://hamasataccessories.com/userfiles/files/45598787747.pdfIn PDF document text
    • https://songod.vn/uploads/image/files/59601087155.pdfIn PDF document text
    • http://www.smpnuenen.nl/images/files/69407552292.pdfIn PDF document text
    • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/katujisevetogiworu.pdfIn PDF document text
    • http://print-printonline.com/ckfinder/userfiles/files/95141235224.pdfIn PDF document text
    • http://www.huntsvillepr.com/files/files/76449294225.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1612f4f1d09cd2---wifituzevigawolelirovewuv.pdfIn PDF document text
    • https://people11people.gr/uploads/File/kotinogoguzupavaweka.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/i0qkvebhabesj26qfrlgccbmc3/gizobojoroluxapopi.pdfIn PDF document text
    • https://tomorrowhubs.com/upload/users/files/vulipupujaluxizide.pdfIn PDF document text
    • https://webmanagement.jbclub.ro/images/file/49355774799.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613566d92eccb---zivasudabevemixilaran.pdfIn PDF document text
    • http://www.jasfec.com/imgs/uploads/kepugosefewo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/BGAemAmcdTc/uplcv?utm_term=events+of+defaultPDF link annotation
    • http://s292376414.onlinehome.fr/datas/imgmail/file/farulabosugobov.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_off0000bd55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD55 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d56c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD56C 10304 bytes
SHA-256: b9ab291af593096d4b4affdd2f28ed8e278f2a7c3f29953f650f1c4d84ca1e9a
font_02_sfnt_off0000ecd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD6 16680 bytes
SHA-256: d01d98c03eee194cd3f3eddda2578713c658e3818478b5283118a3e9a4f650f5