Malicious PDF — malware analysis report

Static analysis result for SHA-256 f40ff16783085834…

MALICIOUS

PDF

55.8 KB Created: 2021-03-09 01:12:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2feda48752ae8623c60fd3721732de7b SHA-1: 5a6e278219eef1fd8436c1c568bd23ae49f49ff7 SHA-256: f40ff16783085834b1db620f93e3c5ff646538c611bf2daae898adb761e5bde8
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 pointing to disposable domains, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded URLs are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8321

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://botokaw.ru/award?keyword=advanced+analytics+with+spark+pdf+github PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485166/normal_603edfb912cad.pdfIn PDF document text
    • http://bestsalestoday.xyz/fortitude_valley_shopping_guideesbes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407733/normal_601e5670d4c85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454547/normal_603e43bdd5553.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401732/normal_6046a28458810.pdfIn PDF document text
    • http://theharaka.online/what_causes_my_diesel_engine_to_lose_powerzcr06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402481/normal_602e4fa6e032f.pdfIn PDF document text
    • http://mirror-x.org/caller_id_number_location_appsmqm5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461219/normal_60243adaaee8b.pdfIn PDF document text
    • http://lofitner.buzz/roms_emulator_psp_androidixwuz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459163/normal_5fca67acdbb1a.pdfIn PDF document text
    • http://private-channel.site/asmaul_husna_free_downloade6d21.pdfIn PDF document text
    • http://healthytrands.com/ramana_maharshi_quotes4fsbw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366304/normal_601da9a251880.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425487/normal_5ffd189f03e1a.pdfIn PDF document text
    • http://spacexfoundation.net/the_100_kass_morgan_settingamzlr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426966/normal_5fdec57893c4f.pdfIn PDF document text
    • http://arendagg.xyz/startup_business_plan_templatexw6cr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42b9c949-2f52-4bb3-8103-254d4dac6791/past_perfect_progressive_tense_worksheet_with_answers.pdfIn PDF document text
    • https://52f9d6e5-2fd5-4906-a030-4d12f703b62a.filesusr.com/ugd/297ecd_0ef39d3b1f0d4f91a01de4109d031e22.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e670baec-ea9a-4444-88d5-231b266dd58b/best_robocall_blocker_app_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f745b1ef-de19-45e2-95cd-4d90944c05b6/lowrey_pageant_organ_price.pdfIn PDF document text
    • https://486bfeb6-87d8-40a3-812f-3449909c9139.filesusr.com/ugd/81b904_da9d8dcdf9a543c7ad796a43fc59c6a2.pdf?index=trueIn PDF document text

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