Malicious PDF — malware analysis report

Static analysis result for SHA-256 f139186ba176df85…

MALICIOUS

PDF

59.9 KB Created: 2021-03-01 05:43:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b227a6697c2554651e06bbfcec6e4d12 SHA-1: 5376b5f59b68d74d8fd225d9af53e746b5cc5b56 SHA-256: f139186ba176df85611697de4db4f16559391e6e921703509af4caecb38fd7ce
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, indicative of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to trick users into downloading further malicious content. No scripts were extracted, but the PDF structure itself is designed to host and redirect to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9398

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://ponafet.ru/award?keyword=flat+tummy+tea+expire PDF link annotation
    • https://cdn.sqhk.co/gazamara/QyiarYL/drift_zone_2_apk_download.pdfIn PDF document text
    • http://olipaka.xyz/8196470853eg2j8.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/J7jbHid/free_printable_connect_the_dots_worksheets_for_adults.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/djgibeV/space_invaders_infinity_gene_xbox_one.pdfIn PDF document text
    • http://kieverts.xyz/zojowawugisobir8tmc9.pdfIn PDF document text
    • http://piwulag.sportsontheweb.net/mercury_75_hp_4_stroke_oil.pdfIn PDF document text
    • http://piwulag.sportsontheweb.net/lapete.pdfIn PDF document text
    • http://tehnoprom.org/driver_asus_x441ua_windows_7ne6lz.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwuwoki/KfNWiiD/54800611307.pdfIn PDF document text
    • https://cdn.sqhk.co/nanubebebot/bbAzkie/19567527893.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/how_to_replace_the_igniter_on_a_furnace.pdfIn PDF document text
    • http://amsidisi.xyz/dolowusiz00091.pdfIn PDF document text
    • http://teachersaid.fun/golf_buddy_wt5_price0f621.pdfIn PDF document text
    • http://nabenejajoko.myartsonline.com/50307156703.pdfIn PDF document text
    • http://suzimisefodude.epizy.com/78982542060.pdfIn PDF document text

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