Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eb4caa8b13aca38…

MALICIOUS

PDF

90.8 KB Created: 2021-03-21 05:28:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2b3a7a882c31b8a74e79a1a714d61d35 SHA-1: 5623f00c8e8f1b172bc3908b2108740ddf305f1c SHA-256: 4eb4caa8b13aca38faa5abd4cd4297930a0305894cc6aa21127f861015abb135
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains multiple embedded URLs, many of which point to disposable domains and are flagged as part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of external URIs suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://mezovuduw.ru/wix?keyword=solving+inequalities+by+multiplying+or+dividing+worksheet+pdf PDF link annotation
    • http://dk-inc.xyz/integrated_chinese_4th_edition_volume_1_character_workbook9efis.pdfIn PDF document text
    • http://fuwijumazawad.mywebcommunity.org/how_to_operate_black_diamond_storm_headlamp.pdfIn PDF document text
    • http://kozijadeji.22web.org/vigorufag.pdfIn PDF document text
    • http://mamontov-net.cc/17661361327wrybs.pdfIn PDF document text
    • http://my-favshopd.online/mijagujel2xyy.pdfIn PDF document text
    • http://kuroramogesok.iblogger.org/39205817625.pdfIn PDF document text
    • http://nashremont.site/enchanting_guide_classic_1-_300zmtma.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/66008844932.pdfIn PDF document text
    • http://wutopezogegusi.getenjoyment.net/motorola_cp200d_battery_removal.pdfIn PDF document text
    • http://rollernefrit.xyz/community_definition_sociologywagx0.pdfIn PDF document text
    • http://nafepuzemobir.sportsontheweb.net/mewinegewudalexuzosu.pdfIn PDF document text
    • http://vuvefezod.iblogger.org/gefimovanimuwuzapabakipa.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/febiveripulenadaxuje.pdfIn PDF document text
    • http://zosoxefu.22web.org/xopobewo.pdfIn PDF document text
    • http://nickned.me/253396879976spys.pdfIn PDF document text
    • http://iranianvc.com/24480515175pkw17.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6518da40-f63b-46f6-9fbd-3a02e35e082a/philips_multigroom_series_5000_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a253a090-22e3-402c-87bd-15be7d07f795/nojuvadudepigupuvajob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3228cd15-8862-49b4-8f0b-cda503fb6ce0/78989138015.pdfIn PDF document text
    • http://lozadubevapoke.epizy.com/salepalavonosek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8d3e0e8-f11f-4915-a3ac-b2af976cc7cc/luzinaredifibavamivowiwi.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10284 1644 bytes
SHA-256: 162c0a010de815b7113e95042773df5ff206858396d732a2cab15c40ed542f26
font_01_sfnt_off00010aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA8 6144 bytes
SHA-256: 2147af96b2b0e5e1577a738b63722784c5e02a30e5aa12ff6a86b35f64a10689
font_02_sfnt_off00011f77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F77 11388 bytes
SHA-256: 0a498b879db6ae6fd90f3b5a038f849842219444ccfed1c7e98e38859ff73dff
font_03_sfnt_off00014631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14631 16368 bytes
SHA-256: 79844014a869509069181dbbe727b78694704784ec363f31e8d6fed1a7e6d460