Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f402224d387338…

MALICIOUS

PDF

63.8 KB Created: 2022-04-09 23:55:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 6bf09e4457124e59cd0e5454cb368bb8 SHA-1: 7a0d4e5a0f9a4d8e637eae6ad676cc3758c32f7d SHA-256: a4f402224d3873389f1c22e6b496f9d8597f59922adae2278e5112ea0148f012
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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
  • 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://cafij.co.za/YmrXLWy8?keyword=olympus%20om%20100mm%20f2.8 PDF link annotation
    • http://z-him.ru/userfiles/file/21787072504.pdfIn PDF document text
    • http://sportschoolindex.nl/images/uploads/89783243757.pdfIn PDF document text
    • https://hale-metalice.com/images/userfiles/19819569392.pdfIn PDF document text
    • http://rostocker-taxi.de/resources/files/taxubekup.pdfIn PDF document text
    • https://ducan.knjigae.com/userfiles/file/paxufamug.pdfIn PDF document text
    • http://cuboni.com/uploadfile/hong202202260656408481.pdfIn PDF document text
    • https://xn----7sbbzeackusl5afk8czi.com/admin/kcfinder/upload/files/75241429302.pdfIn PDF document text
    • http://kovacsoltvaskerites.hu/images/file/molagipegilemolekababimiw.pdfIn PDF document text
    • https://bestcoloringpages.com/userfiles/file/fiwodajuwupafumulodat.pdfIn PDF document text
    • http://accuway.yun2u.com/upload/files/kefotuvox.pdfIn PDF document text
    • http://optimumnieruchomosci.pl/uploads/userfiles/files/dazeletib.pdfIn PDF document text
    • http://hammaddedunyasi.com/panel/kcfinder/upload/files/95540504159.pdfIn PDF document text
    • http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/78733350104.pdfIn PDF document text
    • http://ikmblansko.cz/files/upload/files/funagolapujefabupirozeti.pdfIn PDF document text
    • http://yesilyurtalm.com/userfiles/file/wapukexipapekasisifo.pdfIn PDF document text
    • https://bopelesi.weebly.com/uploads/1/3/0/8/130874615/3274682.pdfIn PDF document text
    • https://stalbeckers.nl/userfiles/image/file/sipawofu.pdfIn PDF document text
    • https://gedachtegoed.nl/UserFiles/files/vatoxegagor.pdfIn PDF document text
    • http://nepallooms.com/imagenes/file/76505375115.pdfIn PDF document text
    • https://tezerwatch.com/file/upload/files/03-12-15-05-29-83.pdfIn PDF document text
    • https://nabumeludofava.weebly.com/uploads/1/3/4/3/134373896/874cba34.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_off0000997a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000997a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000997a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x997A 15108 bytes
SHA-256: d5befcb81f8b41f40b4ee887febbe46f21e52c2e934c448b847c315007e5f474
font_01_sfnt_off0000bfe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE5 10640 bytes
SHA-256: a5bc79c44e98c5c98afa2306312386a25cb16560b4b5bac2bc5c644e0ee5964a
font_02_sfnt_off0000d866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD866 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1