Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b25cbf1af5de745…

MALICIOUS

PDF

150.6 KB Created: 2021-12-03 03:02:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-02
MD5: 55921823ba915e0d9340c06db4863d02 SHA-1: 01ef5e21ef363c5aac4faafb8607e80168cbf55e SHA-256: 6b25cbf1af5de7450ff3e645d0dbea7517730ae10869ec873d5716925596c886
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9720

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://sealordhotels.com/ckfinder/userfiles/files/47583234372.pdf In PDF document text
    • http://bulmarconsult.com/files/sudemutesidamugijomapudo.pdfIn PDF document text
    • http://whdhgs.com/uploads/file/20211116132456337.pdfIn PDF document text
    • https://cuichi177.com/uploads/files/202110292305028850.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/4be00e067d04d054c179875b2a2b2543/kaxej.pdfIn PDF document text
    • https://khachsan295doson.vn/namthuan/images/news/files/95744715042.pdfIn PDF document text
    • https://malinaionescu.ro/userfiles/file/jigasunefinud.pdfIn PDF document text
    • http://tokyoracing.hu/userfiles/file/norubitose.pdfIn PDF document text
    • http://www.szphotar.com/admin/img/files/88873502792.pdfIn PDF document text
    • http://qiuyutv.com/userfiles/files/20210926043715.pdfIn PDF document text
    • https://maturana.cl/upload/file/tozutasemaj.pdfIn PDF document text
    • https://www.confirmedtour.com/files/panidamakalinawewojazusi.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/42qq0o5e31bg5bd0n9ib3n37mb/xadomulinuregaxe.pdfIn PDF document text
    • https://qualityroofinnandsuites.com/nbloom/fckuploads/file/79762979196.pdfIn PDF document text
    • http://vanharteyoga.nl/uploads/files/20520096330.pdfIn PDF document text
    • https://noclegsosnowiec.pl/eurostyl/photos/file/82401966851.pdfIn PDF document text
    • http://k-souz.com/userfiles/file/guwomopikukiden.pdfIn PDF document text
    • http://tai-yang.tw/taiyang/upload/file/barurokegokatapedev.pdfIn PDF document text
    • http://e-restauracion.com/app/webroot/files/uploads/files/binilo.pdfIn PDF document text
    • http://beiwendq.com/data/attachment/file/zobofemevuw.pdfIn PDF document text
    • http://bernardthevenet.fr/ckfinder/userfiles/files/72781779198.pdfIn PDF document text
    • http://2017.letnifestiwal.pl/ckfinder/userfiles/files/83320692301.pdfIn PDF document text
    • https://huntic.ru/uplcv?utm_term=castrol+edge+professional+c1+5w30+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_off0001e92e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001e92e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e92e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E92E 18800 bytes
SHA-256: 5d5bd5022335e9ccce50fed67f412acf31f72b5cb5567bfc599a1f2a634788a4
font_01_sfnt_off000219fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x219FE 11392 bytes
SHA-256: aa299bfbc941a58774c7684d1f3f8214f20d330fed82a3522f5f16d477851ce9
font_02_sfnt_off000234e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x234E1 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336