Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5df6b503f5102a4…

MALICIOUS

PDF

120.7 KB Created: 2022-04-18 01:44:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-06
MD5: d09502b96a45d8432b52c09e7b474960 SHA-1: d84a5702c12d6c5b20d69c3e271020fca4c2838f SHA-256: b5df6b503f5102a401400d1ea92652851627dda9094f049327b2521600c10ecb
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://yubit.co.za/YmrXLWy8?keyword=harry%20potter%20goblet%20of%20fire%20beauxbatons%20cast PDF link annotation
    • https://www.passion-rnd.com/upfile/files/2022/04/13/63008928196.pdfIn PDF document text
    • https://damabinon.weebly.com/uploads/1/3/0/7/130738970/fiwud.pdfIn PDF document text
    • http://bthg.bagwfbm.de/upload/files/pinikamaxafabesapun.pdfIn PDF document text
    • https://dalnoboy.com/data/filestorage/upload/files/fisaminamabubivobijugig.pdfIn PDF document text
    • http://computerdoki.hu/user/file/69202455602.pdfIn PDF document text
    • https://pebuxunuvir.weebly.com/uploads/1/3/1/4/131483235/687020.pdfIn PDF document text
    • https://pubotaxo.weebly.com/uploads/1/3/5/9/135962756/7780935.pdfIn PDF document text
    • http://fulico.com/v15/Upload/file/20223131137201368.pdfIn PDF document text
    • http://ndt-ultratech.com/files/42365355126.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/28be37b4b3acb8679f25954e0bde6eb8/tunazekapinodovijitolus.pdfIn PDF document text
    • http://nextgems.com/ckeditor/kcfinder/upload/files/14842910881.pdfIn PDF document text
    • https://swaminarayangm.org/userfiles/file/54874793092.pdfIn PDF document text
    • https://novafexoxola.weebly.com/uploads/1/3/4/4/134400343/ragazonete-kukejotolo-femuvala-nobelurifi.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622f9d0948ee3---rezezipipex.pdfIn PDF document text
    • http://www.octopus-quatuorvocal.com/ckfinder/userfiles/files/lafivuj.pdfIn PDF document text
    • https://doanhnghiepvietnam.niengiamdoanhnghiep.vn/img_duhoc/files/nufesuzemupuxe.pdfIn PDF document text
    • http://silexsys.com/ckeditor/kcfinder/upload/files/40434307021.pdfIn PDF document text
    • https://mutebomex.weebly.com/uploads/1/3/2/7/132740724/2880782.pdfIn PDF document text
    • http://naturestuff.nl/siteimages/file/72032154440.pdfIn PDF document text
    • http://www.veedik.net/assets/admin/kcfinder/upload/files/mudom.pdfIn PDF document text
    • http://legrand-valena.su/kcfinder/upload/files/8191949405.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_off0001709c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001709c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001709c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1709C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000188b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x188B3 11104 bytes
SHA-256: 538b1f784b0055a5535382d14a9475a072a2f20aa7ab435c370468bd365fa781
font_02_sfnt_off0001a281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A281 18608 bytes
SHA-256: 312d007f5f070418b704980454bf6086cc1cc876ac44590b4aeecc58a3fb85b6