Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5988863e4deab3d…

MALICIOUS

PDF

51.0 KB Created: 2021-03-11 00:21:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 113654c3ac85660ba75b47bdd44f0de0 SHA-1: 2471c304000e8d8f6d23bbd0d14de325754fa45a SHA-256: f5988863e4deab3d2ae9035a1a78604eb8cd9465055ab078e78aab16caf236aa
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to disposable hosting or unknown domains, suggesting a link farm designed to distribute malware or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to contain metadata related to PDF generation and potentially search terms, further supporting the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6561

Heuristics 4

  • 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
  • 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://bologen.ru/123?utm_term=bernina+record+830+manual+pdf PDF link annotation
    • http://monongzhlh.space/zotitinodufamizepiympl.pdfIn PDF document text
    • http://vinoxulib.iblogger.org/7483153140.pdfIn PDF document text
    • http://reduslim-sito.site/money_makers_osrs_f2pcm3s1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382414/normal_5fdb56f980ac7.pdfIn PDF document text
    • http://koolmaxt.online/fairy_tail_arc_episode_guideh6nm5.pdfIn PDF document text
    • http://francobusiness.com/dd_3.5_mago_combattente8tvf2.pdfIn PDF document text
    • http://mebelintera.ru/chicago_blackhawks_news_bleacher_report5ap6j.pdfIn PDF document text
    • http://rbqjkwklnd.xyz/international_business_degree_entry_requirements9qoaj.pdfIn PDF document text
    • http://lordtrans.ru/can_you_share_a_copyrighted_photo_on_facebookf0e4g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449424/normal_5fe7ff56484af.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/23929024432.pdfIn PDF document text
    • https://fac30f9c-1bc3-4ff6-ac40-7ced1d2a170b.filesusr.com/ugd/3b7182_e0396c3a34a94e05bfbbc6c7dc91e414.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/sharp_atomic_weather_station_time_zone.pdfIn PDF document text
    • https://19e6fc83-c281-4d06-93fd-e8b16a02b90a.filesusr.com/ugd/ce5d00_bd9945cefa23410eb243802fe28a6b4d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dupula/chandramukhi_vadivelu_comedy_free.pdfIn PDF document text
    • http://tereralubo.epizy.com/50855697449.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/entry_level_hr_cover_letter_template.pdfIn PDF document text
    • http://deroluzotuz.epizy.com/56019298143.pdfIn PDF document text
    • https://6f81cef9-66a2-447d-9e1d-4c0427ef15c5.filesusr.com/ugd/4d935e_17f4e5394e934c9bb10862f941ff7963.pdf?index=trueIn PDF document text
    • https://53ebb62d-ddaf-432f-8dc3-1f4746653467.filesusr.com/ugd/bbd3cf_7d1446f819a448ca879267c76427621a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/23306862772.pdfIn PDF document text
    • https://569961a5-e6b5-462d-8b38-7193d5e7b20b.filesusr.com/ugd/a37a2e_8a84ef43d981453f90f85206e724bd0a.pdf?index=trueIn PDF document text