Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd3d1bb82dc068a9…

MALICIOUS

PDF

53.8 KB Created: 2021-05-01 12:09:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 41bf4227f80c02d386fa5824e25848ba SHA-1: 3484083c06b17807f9ee746a10d86cc0c7a1cd59 SHA-256: cd3d1bb82dc068a9494403987faecab149a45825eaea50e37bbaf1b20ac5c396
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link farm designed to redirect users to various external websites, masquerading as search results. The primary malicious URL identified is https://jottigo.ru/strik, which likely serves as a phishing or malware distribution point. The presence of numerous links and the ML classifier's flagging indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8022

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://jottigo.ru/strik?utm_term=the+merchant+of+venice+2004+full+movie+english+subtitles PDF link annotation
    • https://rawamujorutemet.weebly.com/uploads/1/3/4/3/134360263/bagutikivipe_pakiguwexagoniv_ximijigumodeg_wowonisiwabev.pdfIn PDF document text
    • https://salofapaj.weebly.com/uploads/1/3/4/3/134314320/zuruzojumozo_posojokerosu_natozugirege_momar.pdfIn PDF document text
    • https://cdn.sqhk.co/riduwadanu/6jf1ghD/82519560263.pdfIn PDF document text
    • https://cdn.sqhk.co/letowajaf/Vljaie4/pictowords_level_7_answers.pdfIn PDF document text
    • http://zitekimuzefovar.iblogger.org/leadership_styles_and_their_advantages_and_disadvantages.pdfIn PDF document text
    • https://zipemulobob.weebly.com/uploads/1/3/4/5/134528333/062c8.pdfIn PDF document text
    • http://winefesa.22web.org/andromonoecious_definition.pdfIn PDF document text
    • http://braco.ru/how_to_to_write_a_business_planuqn32.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/hepww2v/jixiduwinuridutomem.pdfIn PDF document text
    • http://pycnidwzxc.info/witcher_season_2_release_date_ukj3rxi.pdfIn PDF document text
    • https://cdn.sqhk.co/naruxibe/hhhZig0/51068534806.pdfIn PDF document text
    • https://pifujikis.weebly.com/uploads/1/3/4/8/134875168/421c34.pdfIn PDF document text
    • http://pesowulil.iblogger.org/wasted_years_guitar_tab.pdfIn PDF document text
    • https://9dd02728-8b0e-4c16-8a5b-31b14a6ec887.filesusr.com/ugd/d8c3ed_3ecf96214767463e8b013c1dd22a6769.pdf?index=trueIn PDF document text
    • https://3bcdeb60-9876-4d14-bc0a-1dd1632c647c.filesusr.com/ugd/16a96a_a8770e1466294f098ed61587410162a7.pdf?index=trueIn PDF document text
    • https://366cd995-4ddf-4220-a197-7cea849caf0e.filesusr.com/ugd/947062_addefd537dd44a1db4a7f42d5361e85b.pdf?index=trueIn PDF document text
    • http://bexiguxiluk.epizy.com/64986332029.pdfIn PDF document text
    • https://1ffb5d6c-d890-49e0-9b87-dc10fbfa49e2.filesusr.com/ugd/8bc2a6_0bb1ec67605f4602bf764137c66b72b2.pdf?index=trueIn PDF document text
    • https://6998e30b-c911-4113-ab34-4c15204891c7.filesusr.com/ugd/429b25_834b160676d845d3bf44589a78e7e2c5.pdf?index=trueIn PDF document text
    • http://ganasoniledaw.rf.gd/13083493278.pdfIn PDF document text
    • https://e905e09d-7ddd-4aab-833c-73500e817873.filesusr.com/ugd/f4c08b_858c807e8286456482c38b9d3e1ace6c.pdf?index=trueIn PDF document text

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