Malicious PDF — malware analysis report

Static analysis result for SHA-256 5388d4fbc0fd59d6…

MALICIOUS

PDF

49.6 KB Created: 2021-02-11 14:30:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 768e6f468a67ed6475a20d5fbb1c69cd SHA-1: 843d3ea6709e0c4c2a3c862c06cfe9157c073e46 SHA-256: 5388d4fbc0fd59d628273cd6b6ea399d2d43fda91493f998d67ce9059540463f
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9443

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/aws?utm_term=priest+leveling+guide+vanilla PDF link annotation
    • https://cdn.sqhk.co/tesigasefaxe/fxrn8jd/bojifuwake.pdfIn PDF document text
    • https://cdn.sqhk.co/wuxobilan/1Sibieu/english_pop_songs_90s_list.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408987/normal_5ff61780002da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370307/normal_5ffc185e4d8cc.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/gjPvQBj/dashboard_dog_breed_price.pdfIn PDF document text
    • https://bulodogezuso.weebly.com/uploads/1/3/4/8/134868115/kowunikeki_wagikulipezuw_samugajon_zawute.pdfIn PDF document text
    • https://cdn.sqhk.co/vipikunowi/J4iha2C/4_pic_1_word_4_letters_bulb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465559/normal_5fce920e451d1.pdfIn PDF document text
    • https://tiketutowiko.weebly.com/uploads/1/3/5/3/135345961/taponubebiz.pdfIn PDF document text
    • https://cdn.sqhk.co/geroterunetu/jyhhpih/prayer_of_azariah_in_the_bible.pdfIn PDF document text
    • https://wikefazopikevi.weebly.com/uploads/1/3/4/7/134715570/6f27b35.pdfIn PDF document text
    • https://cdn.sqhk.co/fafegatoko/zgdidpI/sefidojafove.pdfIn PDF document text
    • http://fojamemu.epizy.com/69056632543.pdfIn PDF document text
    • http://fefadipif.rf.gd/gojunuwenakix.pdfIn PDF document text
    • http://tabifewegijip.epizy.com/different_forms_of_alternative_sources_of_energy.pdfIn PDF document text

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