Malicious PDF — malware analysis report

Static analysis result for SHA-256 f483a20b39810ec7…

MALICIOUS

PDF

82.6 KB Created: 2021-03-26 13:56:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b346697c1791d09ca6ae145e49218c13 SHA-1: ea273f101368ba3a148e18824baaff1d7f8df423 SHA-256: f483a20b39810ec74002b898203dfc196e3acf1265d9db22d1102d157de9b23a
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links that redirect to known malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, suggests a lure related to 'Native american signs and meanings'. The ML classifier and ClamAV detection strongly support its malicious nature, likely serving as a phishing or redirection tool.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/strik?utm_term=native+american+signs+and+meanings In PDF document text
    • https://cdn.sqhk.co/balaragu/hmgfU7k/gojalojesejuvivupoma.pdfIn PDF document text
    • http://tijudiwulewanuw.getenjoyment.net/35265298891.pdfIn PDF document text
    • https://cdn.sqhk.co/nudogada/Xhdhhgd/brawl_stars_box_opening_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nejibija/ds9hdhh/jarurizazuri.pdfIn PDF document text
    • https://cdn.sqhk.co/wupofolizaj/e7jhMwY/25306088243.pdfIn PDF document text
    • http://tezoxefakalexo.sportsontheweb.net/66498419354.pdfIn PDF document text
    • http://zixaxagewan.mypressonline.com/how_to_connect_bluetooth_on_pioneer_mixtrax.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/hexJ4jL/4695857370.pdfIn PDF document text
    • https://cdn.sqhk.co/bogovureg/npXgitG/kotusefubuvupos.pdfIn PDF document text
    • https://cdn.sqhk.co/bagekaketox/hcjfxhe/fafatuxe.pdfIn PDF document text
    • http://kawasus.scienceontheweb.net/what_type_of_charger_cable_for_kindle.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/Uyhbrid/jixeximitobemi.pdfIn PDF document text
    • https://cdn.sqhk.co/kidurukazag/Rhcgf7a/kezowekexogumepulefiluz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://givosike.rf.gd/sandvik_cutting_tools_catalogue.pdfIn PDF document text
    • http://gaxilitexu.onlinewebshop.net/68009882440.pdfIn PDF document text
    • http://xawazemekize.epizy.com/application_for_return_of_original_documents_from_college.pdfIn PDF document text
    • http://rurebafib.onlinewebshop.net/fundamental_design_concepts_in_software_engineering.pdfIn PDF document text
    • http://vesijugi.epizy.com/the_forever_war_dexter_filkins_sparknotes.pdfIn PDF document text
    • http://literukijo.epizy.com/quell_user_manual.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10540 5256 bytes
SHA-256: b0fa2108aa64ad7f842bec5a47e96fbdf50de877676c6208262952928361096f
font_01_sfnt_off00011715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11715 11228 bytes
SHA-256: ba56289392c7995c24bf08c82698ab68b75894ff9ecec49bb20678ecb9540bc3

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