Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af123127f8db41b…

MALICIOUS

PDF

76.9 KB Created: 2022-04-11 20:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: bed816dbb43647fb67299bb17b61ef9e SHA-1: 9702bc73211cc37f10d0f5672c4962b42c8f1227 SHA-256: 4af123127f8db41bfd5dae32b9d411967bd25990178ed17fcda8abba7361ccd1
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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.
  • 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://ragaz.co.za/YmrXLWy8?keyword=the%20horse%20the%20wheel%20and%20language%20criticism PDF link annotation
    • http://pastadimatteo.com/ckfinder/userfiles/files/xepefugugoxelu.pdfIn PDF document text
    • https://airshow-bg.com/file/tepafapatize.pdfIn PDF document text
    • https://bticino-rozetki.su/kcfinder/upload/files/wobupefemalafereg.pdfIn PDF document text
    • http://ambulatorioveterinariovianello.eu/userfiles/files/80094763349.pdfIn PDF document text
    • http://babyindex.nl/images/uploads/kiwamibepe.pdfIn PDF document text
    • https://savatevadenu.weebly.com/uploads/1/3/1/4/131452836/nuratijemebir_luvurirudulafop_zesami_sinixaraduravul.pdfIn PDF document text
    • http://stoewebdesign.no/userfiles/file/gizuzodowewu.pdfIn PDF document text
    • http://mindentudor.hu/userfiles/file/rezudukinoxizuxewaris.pdfIn PDF document text
    • http://ztkammer.at/uploads/file/78798863319.pdfIn PDF document text
    • https://nmcs.ca/userfiles/files/71870408982.pdfIn PDF document text
    • http://pskov.agisinfo.ru/uploads/content/files/levuzi.pdfIn PDF document text
    • https://cancelaria.pl/galeria/file/tonogatumefegafukupozona.pdfIn PDF document text
    • http://icodm.org/admin/upload/files/zitafafi.pdfIn PDF document text
    • http://am-assets.com/aom/magnolia/userfiles/file/riwenaxuxopexeno.pdfIn PDF document text
    • https://123natura.com/stockages/files/70619860153.pdfIn PDF document text
    • http://taxinspire.pl/www/js/kcfinder/upload/files/27727541515.pdfIn PDF document text
    • https://bunikesetula.weebly.com/uploads/1/3/0/7/130739723/xeferenu.pdfIn PDF document text
    • http://hzyixiangchem.com/upload/files/63971073627.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/u2jgo5b9b3avfcq05g50nnr2fn/33428824662.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 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_off0000c825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC825 10964 bytes
SHA-256: ac39846c6ebc382f232f20adfa276b244295e87edbac2e50638118d26885516a
font_01_sfnt_off0000e145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE145 16896 bytes
SHA-256: 1a8ca5df73dd87743d3e4b7b036df7780c8630a49f985c71c596542b05d40bbc
font_02_sfnt_off00010d4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D4C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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