Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bf99a5d8ad3841…

MALICIOUS

PDF

89.1 KB Created: 2021-11-02 06:52:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: d0c7c6a826a3c96d3f7d1b1597184565 SHA-1: c7897d7c6e298c5f6a0d28ee045bcddecd6adc14 SHA-256: 72bf99a5d8ad384101235253dbfe6a6ac6b99044eb86dbb49eeb276a1852612a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 https://biserica-izvorul-tamaduirii.ro/files/27219559702.pdf In PDF document text
    • http://hamlineparkplaza.com/assets/amund/ckfinder/userfiles/files/74715242428.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/88626661417.pdfIn PDF document text
    • http://geose.ru/userfiles/file/bubixisetijopebaseralor.pdfIn PDF document text
    • http://secondhandgraphics.com/usrfiles/file/kugaduratubesizedoja.pdfIn PDF document text
    • http://naasschoolofmotoring.com/fckeditor/userfiles/file/93806807628.pdfIn PDF document text
    • https://www.abrasco.org.br/ckfinder/userfiles/files/geguvolazewipedetosivo.pdfIn PDF document text
    • http://sunnysolutions.it/uploads/assets/file/93987805136.pdfIn PDF document text
    • http://only-svet.ru/upload/files/14264434074.pdfIn PDF document text
    • http://cuanhavesinh.com/userfiles/file/93215253441.pdfIn PDF document text
    • http://dury114.com/userData/ebizro_board/file/56791680063.pdfIn PDF document text
    • https://tnmkor.com/FileData/ckfinder/files/20211023_7F25E8961949E6CC.pdfIn PDF document text
    • http://1qjd.com/upload/files/2021-10-15-16-58-18-remwWDJT.pdfIn PDF document text
    • http://meubelenindex.nl/images/uploads/wumodunawafatanu.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/2b9d33bd0c7ab33b762ac45b071681b4/65772295824.pdfIn PDF document text
    • http://mdknoodles.co/uploads/files/38281672598.pdfIn PDF document text
    • http://hangtatmj.com/userfiles/xuwilifusag.pdfIn PDF document text
    • http://nghieuphong.com/upload/files/38094307325.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/896FEnmJZlk/uplcv?utm_term=complete+body+workout+pdfPDF 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_off0000f89a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF89A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000110b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110B1 10696 bytes
SHA-256: 281b2b2789ae86a32a26f03969ed17ea6eb14a72b8f08890599029ce55f72e76
font_02_sfnt_off0001291b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1291B 17720 bytes
SHA-256: c74dce507f311bb82cf91f803b783b0aa914083688aa739e04f5bda5cba0ba95