Malicious PDF — malware analysis report

Static analysis result for SHA-256 425b0129d2393c0f…

MALICIOUS

PDF

83.3 KB Created: 2021-09-15 23:05:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 5ffc1a46c8cf5e274ad6fa761bbbebab SHA-1: dd94a22089236add877d39e4914092af8e686f37 SHA-256: 425b0129d2393c0fe99ebff0676888d0e54136e3d6402c03f2555fb1369f57b2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • 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.
  • 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 http://hoachathoanggia.com/userfiles/file/91374634580.pdf In PDF document text
    • https://digicpictures.com/downloads/tudezoruferuzigoxow.pdfIn PDF document text
    • http://phupmirpol.pl/userfiles/file/lekur.pdfIn PDF document text
    • http://studiotecnicomartani.eu/userfiles/files/mulovarene.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/517fal7pk38hse38jmltejj6pq/67815703701.pdfIn PDF document text
    • http://lianbang123.com/uploads/files/202109021403443055.pdfIn PDF document text
    • http://sfipl.in/userfiles/file/21315691663.pdfIn PDF document text
    • http://wwsm-hk.com/files/file/matom.pdfIn PDF document text
    • http://sungsam.net/userData/board/file/tiwezolojunowifajof.pdfIn PDF document text
    • http://dienlanhhuubinh.com/upload/files/51467431733.pdfIn PDF document text
    • http://obrienbuilders.com/userfiles/file/fezitojo.pdfIn PDF document text
    • http://aimic.com/userfiles/file/ranasiwobubamaji.pdfIn PDF document text
    • http://www.truca-taoules.com/ckfinder/userfiles/files/71002742977.pdfIn PDF document text
    • http://nationalcoopadvisors.com/userfiles/files/26335781802.pdfIn PDF document text
    • http://www.wm-meyer.de/meyer/admin/editor/ckfinder/userfiles/files/35984374697.pdfIn PDF document text
    • http://montex.pro/uploads/userfiles/file/dibexomivutubo.pdfIn PDF document text
    • https://limsurdua.com/contents/files/46248562521.pdfIn PDF document text
    • https://beysukonaklari.com/ckfinder/userfiles/files/noliwekezaguxelu.pdfIn PDF document text
    • https://www.champagne-cornevin.fr/ckfinder/userfiles/files/pebinomutuz.pdfIn PDF document text
    • http://wpscrm.in/uploaded_files/userfiles/files/pajofixizux.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613aa15c5d07a---28817582917.pdfIn PDF document text
    • https://hiperaktivite.info/userfiles/files/vafimefikowix.pdfIn PDF document text
    • http://avvolodin.ru/upload/file/ravanowisiwoduja.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=how+to+factory+reset+android+phonesPDF 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_off0000dfcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCB 17916 bytes
SHA-256: 5821fbbc1a15cf99c6b56767b6a30d4c35f7619ab38491568f716df042ae30f0
font_01_sfnt_off00010eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EB8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000126cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126CF 10864 bytes
SHA-256: e71d9e399d08efcfe2a0bc526e79836db80f491b1f1f9d0b7fe38b899a1017be

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