Malicious PDF — malware analysis report

Static analysis result for SHA-256 25cd21348e199045…

MALICIOUS

PDF

233.0 KB Created: 2022-03-01 11:21:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 3f5ad09375febc10a6be5ae0ee9bd4b5 SHA-1: 0996220cfb07de23dc715c8f1c4c8775c2b5ca46 SHA-256: 25cd21348e199045222781e493743325bfffb350e04433babc741090298ef983
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9698

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://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/57fbc3372747005ef8f36df6db84b3d4/supitesuwegeli.pdf In PDF document text
    • http://cuanhavesinh.com/userfiles/file/sazupavopomotixaxusebuwu.pdfIn PDF document text
    • http://startmatbaa.com/userfiles/file/radul.pdfIn PDF document text
    • http://robodit.ru/kcfinder/upload/files/12750547563.pdfIn PDF document text
    • http://immat.org.tr/kcfinder/upload/files/52408049525.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620efa24c6034---87530479365.pdfIn PDF document text
    • https://generace89.cz/kcfinder/upload/files/jomiguki.pdfIn PDF document text
    • https://eastmanllc.com/ckfinder/userfiles/files/sotejojuwefujig.pdfIn PDF document text
    • http://ourdesign.hk/ckfinder/userfiles/files/30170469340.pdfIn PDF document text
    • https://vizesblokk.hu/files/file/66515869361.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/162128c876ab01---kasodazitenukomaxulul.pdfIn PDF document text
    • http://xavitec.com/cliente/conteudos/files/felogad.pdfIn PDF document text
    • https://ilonew.tasksplan.com/userfiles/files/fuwiwuk.pdfIn PDF document text
    • http://kungfubp.hu/admin/assets/images/files/39722125924.pdfIn PDF document text
    • https://mwasafat.com/uploads/files/vufigodabe.pdfIn PDF document text
    • http://www.iccet.org.tr/kcfinder/upload/files/rakupezikojozebufato.pdfIn PDF document text
    • https://www.solucionaesp.com/ckfinder/userfiles/files/27208651506.pdfIn PDF document text
    • http://%2Fvar%2Frun%2Fdocker.sock/v1.24/containers/create?name=redisIn PDF document text
    • https://fecuq.co.za/XSRYdR1H?utm_term=string+array+xml+to+arraylist+androidPDF 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_off00033137.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00033137.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00033137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33137 19876 bytes
SHA-256: 57530e013c878179ef6602fa9d5ff07de19987c1eeff9675cfa747a6fe988c64
font_01_sfnt_off00036657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36657 10752 bytes
SHA-256: 7fd3c38403f8e4fd07a69fc8679909ebc6bed77cd8adeee523ade16498abad09
font_02_sfnt_off00037ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37ECC 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9