Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f009e51164be4e…

MALICIOUS

PDF

194.5 KB Created: 2022-03-08 10:51:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: a9212d98bd7e481f102d4b8c34a47402 SHA-1: c6fe2f8f2f897709ba0229f69d36c16eb11efaf7 SHA-256: a4f009e51164be4eafeb1127757774865a2ee8f5e3421726d3b47cf6b181ad06
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9547

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://wirut.co.za/XSRYdR1H?utm_term=music+mpya+bongo+fleva PDF link annotation
    • http://studiotecnicofrisoli.com/userfiles/files/nefojudifuleg.pdfIn PDF document text
    • http://jerry-cheese.com/kcfinder/upload/files/nazijosokepexaberilikoja.pdfIn PDF document text
    • http://nccpindia.org/ckeditor/kcfinder/upload/files/gigavadatomamogo.pdfIn PDF document text
    • https://alibrahimtravel.com/mycms/uploadedimages/editorUploadedImages/file/49827244180.pdfIn PDF document text
    • https://soenen-pneus.com/upload/file/17766809077.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621d529b2d054---diwapixepipawavesareti.pdfIn PDF document text
    • http://bashtourizm.ru/uploads/files/68992772104.pdfIn PDF document text
    • https://obo.olsztynek.pl/assets/includes/kcfinder/upload/files/17128974226.pdfIn PDF document text
    • https://dev-intranet.publiticket.fr/intranet/upload_fckeditor/file/52859318601.pdfIn PDF document text
    • http://packagingandfoodmachinary.com/userfiles/file/befikukimabajopipolofik.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/jhjnpbd5m14kjkqp5054i12jm5/88086914493.pdfIn PDF document text
    • http://bernievet.ro/kcfinder/upload/files/sejisereto.pdfIn PDF document text
    • http://clinicaveterinariagussago.com/userfiles/files/5817452844.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/848406180993583f15182ae55ecc4c96/lutudiwij.pdfIn PDF document text
    • http://cftckr.marketsearching.com/upload/files/ginom.pdfIn PDF document text
    • https://agregadoschucuri.sinecsas.com/ckfinder/userfiles/files/15676242772.pdfIn PDF document text
    • https://temporar.mirceaseminee.ro/printuri-fi/files/darasifuvu.pdfIn PDF document text
    • http://alkord.kz/app/webroot/js/kcfinder/upload/files/xisexusafolikepiwo.pdfIn PDF document text
    • https://odlingfamily.com/userfiles/file/7391965400.pdfIn PDF document text
    • http://tmservice.nl/bestanden/files/24542364931.pdfIn PDF document text
    • https://www.globalportsholding.co.uk/ckeditor/kcfinder/upload/files/mulofelizesidideweta.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/16203e28d6d58f---wevisiboxitakevogal.pdfIn PDF document text
    • http://ng-sons.com/userfiles/file/bujenineboxafaze.pdfIn PDF document text
    • http://xn--q20b13r9leepaeb.net/upload/file/202202171655074122.pdfIn PDF document text
    • https://taflanelektronik.com/img/userfiles/file/vekugadipodunu.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_off00029a52.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00029a52.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00029a52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29A52 11036 bytes
SHA-256: 6bb8e58e62a529104eb4c06bc92b4cb303805d8e1c6ab699880039c195fc7906
font_01_sfnt_off0002b3d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B3D9 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0002caf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAF4 18500 bytes
SHA-256: cb6dfc3229bbe855c090d6c9cb320b9e69f7ab1b10f30dbc2cb3f19b27f7b166