Malicious PDF — malware analysis report

Static analysis result for SHA-256 f878b825176c5f44…

MALICIOUS

PDF

82.4 KB Created: 2021-09-09 19:38:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: 312620755ef54ecc18d83f06ad1e4040 SHA-1: 6b1a772c0f56cf8d1838320fd951a4daf87e6dcd SHA-256: f878b825176c5f44f044b9a87f71bcdac7e750a520ce865d007baf5018e6fbbc
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/bc384416e5b09193b257729d024a55d1/59276351751.pdf In PDF document text
    • http://denge.aero/upload/files/kojosefuro.pdfIn PDF document text
    • https://apz-arte.com/ckfinder/userfiles/files/45121118656.pdfIn PDF document text
    • http://soyana.de/js/ckfinder/userfiles/files/13364610297.pdfIn PDF document text
    • https://phoenixturkey.com/upload/ckfinder/files/kegetaveferiditesomiwaboj.pdfIn PDF document text
    • https://pjkconstruction.ca/images/file/rorudetinatifolaguv.pdfIn PDF document text
    • http://talk200.com/admin/admin/uploadfiles/file/72321057636.pdfIn PDF document text
    • http://vswet.ru/f/57648517465.pdfIn PDF document text
    • https://majubesar.net/contents/files/20982261766.pdfIn PDF document text
    • https://rtvpuls.com/ckfinder/userfiles/files/lefogipoboxijizunadorip.pdfIn PDF document text
    • https://krzczonowice.pl/gfx/file/gonet.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/34263673977.pdfIn PDF document text
    • https://stormester.no/files/file/17185768053.pdfIn PDF document text
    • http://popnmusic.fr/userfiles/file/wudemumun.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/2d72debdc56d4188ed8e1ad99d098970/47123749351.pdfIn PDF document text
    • http://interface-referencement.com/userfiles/file/giruxonomiwosijo.pdfIn PDF document text
    • http://ekmeta.lt/failai/file/41374395227.pdfIn PDF document text
    • https://paardenwelzijnscheck.nl/app/webroot/files/ckeditor_files/files/bofiputelemadijuz.pdfIn PDF document text
    • http://tznjl.com/userfiles/files/kukutolosimamimajemetuto.pdfIn PDF document text
    • http://laarakkers.com/ckfinder/userfiles/files/15183821495.pdfIn PDF document text
    • http://servicedental.it/userfiles/files/710824098.pdfIn PDF document text
    • http://safires.cz/ckfinder/userfiles/files/48394683119.pdfIn PDF document text
    • http://jshanwoo.com/ckfinder/userfiles/files/68772606610.pdfIn PDF document text
    • http://cerezolorente.com/files/cerezolorente/_repo/file/jutajiri.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=soul+calibur+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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDA 18796 bytes
SHA-256: 41f384b9b7d4b88074ddde9fe4652b3aee1beede2e95023bf3931c8d4fa6bb62
font_01_sfnt_off00010cdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CDD 10280 bytes
SHA-256: b2a01fb77c16863fef7e385f872119017b59f83f52e2b419670e54b38db62368
font_02_sfnt_off00012407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12407 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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