Malicious PDF — malware analysis report

Static analysis result for SHA-256 25cbbbbbb35bb91e…

MALICIOUS

PDF

384.1 KB Created: 2022-03-12 22:16:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 1641f0071490656da3a27cfa949708f1 SHA-1: 60465b7a28ec21e3666a46e578f24f1c05da9cde SHA-256: 25cbbbbbb35bb91e5bae18118c00969d1ee416cd046292150ba42cd4c971fde1
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6300

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
  • 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.
  • 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.
  • 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://yoyep.co.za/XSRYdR1H?utm_term=ada+guidelines+diabetes+elderly PDF link annotation
    • http://voltgroup.com.ua/assets/kcfinder/upload/files/41244739295.pdfIn PDF document text
    • http://wallbedsindia.com/uploads/sunonowufamov.pdfIn PDF document text
    • http://thuaphatlailongthanh.com/upload/contentFile/minhchau/file/mumopujujefezipogofiloxor.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/296c770d8a46a3a9d7504d668795b764/xikuluxalujukajosuge.pdfIn PDF document text
    • http://databaze.glaukom.cz/upload/files/91984551841.pdfIn PDF document text
    • http://semihkerpiccilervesupersound.com/upload/file/3659504146.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16206d20784e23---jelakosupene.pdfIn PDF document text
    • https://shaksheer.com/app/webroot/upload/files/22876865122.pdfIn PDF document text
    • http://targhevaticane.it/userfiles/files/dexikuxudozidu.pdfIn PDF document text
    • http://www.stts-tir.com/admin/kcfinder/upload/files/zofese.pdfIn PDF document text
    • http://naasschoolofmotoring.ie/fckeditor/userfiles/file/vemisawokotujixider.pdfIn PDF document text
    • https://tuyendung.tlipgroup.com/upload/images/files/36780164142.pdfIn PDF document text
    • http://doudou.tw/userfiles/files/56708128935.pdfIn PDF document text
    • https://absoger.bmv-communication.fr/uploads/files/wupapijefugutafiduzadowaj.pdfIn PDF document text
    • http://bukitjaya88.com/kcfinder/upload/files/vopaxuturatojifopomu.pdfIn PDF document text
    • http://ilpiccantino.it/admin/data/img/uploads/files/dirawubulunatane.pdfIn PDF document text
    • http://heonlab.hu/uploads/files/melawuradal.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/483oem141d77poe40uijtnthd8/fezuzova.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16207360961634---11864960890.pdfIn PDF document text
    • http://palaciodelosnavas.com/userfiles/file/sejuminogojagofexer.pdfIn PDF document text
    • http://businessnavigator.in/ckeditor/uploads/files/80514260495.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/16215c199638ea---luwibadu.pdfIn PDF document text
    • http://szigetkoz-vizitura.hu/admin/kcfinder/upload/files/1656197025.pdfIn PDF document text
    • https://corianderedmonton.com/ckfinder/userfiles/files/62441751421.pdfIn PDF document text
    • http://grv.arq.br/admin/kcfinder/upload/files/44594551550.pdfIn PDF document text
    • http://aliguoriarchitetto.eu/userfiles/files/nazejipujulenasopigilew.pdfIn PDF document text
    • http://www.romdom.pl/public/js/kcfinder/upload/files/98348262297.pdfIn PDF document text
    • http://spgcplb.com/ckeditor/kcfinder/upload/files/25904961376.pdfIn PDF document text
    • http://zzzwchem.com/upload/files/wonesa.pdfIn PDF document text
    • https://www.trafiktehaklarim.org/kcfinder/upload/files/gisivokavud.pdfIn PDF document text
    • http://songhandiban.com/uploadfile/file/2022022504551873499.pdfIn PDF document text
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16205754c6fc09---turosodatowipalutuwe.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_off00059030.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00059030.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59030 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0005a750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A750 10640 bytes
SHA-256: b1735e41ed56787381b39bafaaeed0bb040556c9f75dac64ee8514e21c4a404b
font_02_sfnt_off0005bf9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF9B 18376 bytes
SHA-256: 04983e465496ccc4a2c6b288953885b52c1a24f9a6d00c26a50997233b818aed