Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a8baeec1271f25f…

MALICIOUS

PDF

56.3 KB Created: 2021-05-15 23:48:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 036ac77150b1e713bc1ab523b4646b0e SHA-1: cca8aec0430c57ff98307a67dc8bc64a464fa7c0 SHA-256: 1a8baeec1271f25f526053c56420609f2ca3c7ac45e74727d1e53fb5266cdf21
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8952

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://leonvi.ru/strik?utm_term=1794-ib16+allen+bradley PDF link annotation
    • https://niburisugop.weebly.com/uploads/1/3/6/0/136082965/boxulitux-nuverewolixov-xaledunu-fenonogenude.pdfIn PDF document text
    • https://cdn.sqhk.co/resilano/hLaja5O/71156615133.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/idRhaxa/guess_the_movie_name_with_pictures.pdfIn PDF document text
    • http://sosiwawivijomo.scienceontheweb.net/72280147789.pdfIn PDF document text
    • https://cdn.sqhk.co/tumupowe/ji0EBIJ/python_jinja2_template_tutorial.pdfIn PDF document text
    • http://miwasigal.mywebcommunity.org/89530652785.pdfIn PDF document text
    • https://riwurarelix.weebly.com/uploads/1/3/4/4/134484082/lipegoku-jetebu.pdfIn PDF document text
    • https://finelesazik.weebly.com/uploads/1/3/4/7/134715738/11664.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/EhhguB3/pisabuserixexibipuzi.pdfIn PDF document text
    • http://sujawokasafu.onlinewebshop.net/snes_game_genie_codes_super_mario_world.pdfIn PDF document text
    • http://duvodix.myartsonline.com/bojodudafujarogunema.pdfIn PDF document text
    • https://def05634-b969-4265-beeb-1e7d695e9a44.filesusr.com/ugd/6865ce_a4d23e0b7b9f4858ae41dd38d274a724.pdf?index=trueIn PDF document text
    • https://e691ad07-92dc-45fa-af10-8929b4045ede.filesusr.com/ugd/87b9a8_8b141ab1889a421495d9fe2a434b635d.pdf?index=trueIn PDF document text
    • https://d572dbd6-ec42-402e-884a-3db6daac2318.filesusr.com/ugd/6a558d_60965c5fdabf4cabaa2392cf1b0714a5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dukajevo/austerity_definition.pdfIn PDF document text
    • https://9cf93ecd-64ee-4ad6-afcc-f350577a7522.filesusr.com/ugd/c4dbd3_cffe7a23212347b494e88a93dee8414f.pdf?index=trueIn PDF document text
    • https://46ebecaa-9490-439b-bba6-ee77f1a6ca93.filesusr.com/ugd/cee8a1_91788c99c6d44174b12d8210fa7671f7.pdf?index=trueIn PDF document text
    • https://33c7e2ec-32fc-4676-a642-9d95a4379e01.filesusr.com/ugd/622218_42450edc35fc40e0862a6729ab9b60fc.pdf?index=trueIn PDF document text
    • https://a91873a8-1f5b-4151-915d-af39eb211f25.filesusr.com/ugd/3f80ec_2553298554284095972f48efd439b3bf.pdf?index=trueIn PDF document text
    • https://42190e62-4dca-482d-a077-ae7b222d7779.filesusr.com/ugd/b91392_3ec22eaa85a54464a15a573e1901689b.pdf?index=trueIn PDF document text
    • http://netomadutimafe.onlinewebshop.net/tapapajepi.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/bandhan_bengali_song_free.pdfIn PDF document text

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