Malicious PDF — malware analysis report

Static analysis result for SHA-256 550aac0ff4d488e5…

MALICIOUS

PDF

537.2 KB Created: 2022-03-22 15:19:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: bc80a3093d004ea4f6c59d12ee7916ff SHA-1: 7bec0728b2f079b8557ae9612f649105fee4a016 SHA-256: 550aac0ff4d488e527e34f4cbed8cc8ee7737f8d9ead74bb49db480433f44965
106 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4651

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/1621a85c16d4ba---metamazu.pdf In PDF document text
    • https://nesselaarbestratingen.nl/plaatjes/file/46387257123.pdfIn PDF document text
    • https://mysilofr.mysilo.com/upload/ckfinder/files/bazibusenevibo.pdfIn PDF document text
    • https://www.edm-medical.net/ckfinder/userfiles/files/70801727488.pdfIn PDF document text
    • https://nullemont.fr/nullemont/ckfinder/userfiles/files/48841440370.pdfIn PDF document text
    • http://i-mag-ine.com/media/files/legife.pdfIn PDF document text
    • https://debcopharma.com/userfiles/file/sakud.pdfIn PDF document text
    • https://skvely-kup.cz/files/file/4852086496.pdfIn PDF document text
    • http://lavender-farm.ro/app/webroot/js/kcfinder/upload/files/9358573151.pdfIn PDF document text
    • http://qianlong99.org/ckfinder/userfiles/files/soxeporigitedowujisu.pdfIn PDF document text
    • http://pcwenhua.com/uploadimg/file/1645423311668400350.pdfIn PDF document text
    • https://hk-delight.com/UploadFiles/file/vevefemijuzesutut.pdfIn PDF document text
    • https://trexanh.net/upload/files/34947590144.pdfIn PDF document text
    • https://hondaotohaiphong.vn/upload/files/11601398614.pdfIn PDF document text
    • http://jiab.net/userData/board/file/rejoxafugapefofujedetofi.pdfIn PDF document text
    • http://85560891.com/upfolder/e/files/20220306145719.pdfIn PDF document text
    • https://lanjutpt2.com/contents/files/57534093974.pdfIn PDF document text
    • https://editions-tlp.fr/ckfinder/userfiles/files/76378349456.pdfIn PDF document text
    • http://www.organizacaoatos.org/admin/ckeditor/kcfinder/upload/files/xogopiduzibuven.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/161fb7dc7cd695---60270164852.pdfIn PDF document text
    • https://www.misuhuko.com/assets/kcfinder/upload/files/rufekewiriguwogapiwo.pdfIn PDF document text
    • http://triple-a.co.th/ckfinder/userfiles/files/10296338206.pdfIn PDF document text
    • http://sk-uralstroy.ru/uploads/files/pididoxepegagaxi.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/9c90698a4ce1b4e71d538502e355374e/netuxibejoxobeloxor.pdfIn PDF document text
    • http://patrick-jardinage.fr/ckfinder/userfiles/files/jilegixovarilamasalu.pdfIn PDF document text
    • https://hediyelikhanem.com/calisma2/files/uploads/8343334020.pdfIn PDF document text
    • https://vida.posilatko.cz/files/wswg/file/xukek.pdfIn PDF document text
    • http://jujucuisine.com/userfiles/file/76764845650.pdfIn PDF document text
    • http://vektorma.ru/uploads/assets/file/bebiperox.pdfIn PDF document text
    • http://allivecoat.com/userData/board/file/46543037244.pdfIn PDF document text
    • http://bioengenharia.com.br/public/libs/kcfinder/upload/files/sizanazugejiwo.pdfIn PDF document text
    • http://020tzs.com/baige/images/userfiles/file/73615224176.pdfIn PDF document text
    • https://etadelloro.it/images/file/damumetibikijefi.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/0ln77gfc18pnoau5r2j0nb54ri/peviwanisegotar.pdfIn PDF document text
    • https://arranridingclub.com/fwd_docs/file/buburevola.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/16239c61448565---padonopalutomolalesedus.pdfIn PDF document text
    • http://zonazero.es/userfiles/file/98859621217.pdfIn PDF document text
    • https://podar.co.za/XSRYdR1H?utm_term=non+verbal+test+pdfPDF 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 extracted file (font_00_sfnt_off0007f648.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0007f648.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0007f648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F648 18048 bytes
SHA-256: e92412cf72bb75906675058d333f1a8cb15c28c5fedc192e82639b06125b47e9
font_01_sfnt_off000825f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x825F7 10584 bytes
SHA-256: 296dbd56357d87152aefe9273bed8c0c63f4c5b63bae22c701ba8908951e7a32
font_02_sfnt_off00083e10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E10 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9