Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af75722f214f32a…

MALICIOUS

PDF

74.2 KB Created: 2021-11-05 02:58:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 5ec7d16b027908589fb5d015dd0d1f6e SHA-1: 5b6389ab16d787eccde707940076e919f16cb10c SHA-256: 4af75722f214f32a864eed4f5c1f48c77ecd94c2e9c1e1b514bf9184cde1862b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://alkirbilaw.com/userfiles/files/foxikixexureke.pdf In PDF document text
    • https://bishopsalamatkhokhar.org/userfiles/file/jibexaxilowepirapa.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16164b4f623762---75176651967.pdfIn PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/vedogeperitedirunog.pdfIn PDF document text
    • http://pusancard.com/userData/board/file/8471828228.pdfIn PDF document text
    • http://ichieh.tw/uploads/files/202110261612143804.pdfIn PDF document text
    • http://all-paca.com/ckeditor/ckfinder/core/connector/php/uploads/files/kodotoxarazutokebi.pdfIn PDF document text
    • http://skolka.pencin.cz/soubory/file/subudefu.pdfIn PDF document text
    • http://antonellascarpittadesigner.it/userfiles/files/26866221635.pdfIn PDF document text
    • https://strings97.hu/userfiles/file/62141909825.pdfIn PDF document text
    • http://xn--90aoaidn.xn--p1ai/ckfinder/userfiles/files/65725574593.pdfIn PDF document text
    • https://aronabritcan.com/userfiles/file/meneviza.pdfIn PDF document text
    • http://lingeriedediva.com/UploadFile/file/2021102304053173499.pdfIn PDF document text
    • http://nm-union.ru/ckfinder/userfiles/files/nulanazebonisa.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616a7741321a7---rizirevawemasova.pdfIn PDF document text
    • http://stavo-bazar.cz/userfiles/file/nibikadobamakeboko.pdfIn PDF document text
    • http://vasekurzy.cz/userfiles/file/82806318870.pdfIn PDF document text
    • https://butagallery.com/userfiles/files/70661378635.pdfIn PDF document text
    • https://institutdesante.org/userfiles/file/gogeruguji.pdfIn PDF document text
    • http://formel1vermietung.de/userfiles/file/vumudofudisadajanudijo.pdfIn PDF document text
    • http://easternhoteljeju.com/FileData/ckfinder/files/20210914_54EFC0A74BF92207.pdfIn PDF document text
    • http://makesrealsense.com/ckfinder/userfiles/files/58851810002.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/HKUGBsJGI0E/uplcv?utm_term=lands+and+forestryPDF 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_off0000c3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C4 15884 bytes
SHA-256: 9777273cf117bc3f73d12d930400cc549b1dd423089ccf705c226afa7b71cf90
font_01_sfnt_off0000ec4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4D 10280 bytes
SHA-256: 66a29076fff52e05de379381f10d1e79c9f7827d580dedb9c236ad48c1306ab4
font_02_sfnt_off0001039b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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