Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b8283a47943a76b…

MALICIOUS

PDF

59.6 KB Created: 2021-03-25 00:23:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 5391ec6646a9eb57cb7a283ecfeb1ef5 SHA-1: 48cd054d5f6f00315788b4d797d0c95bdc11e817 SHA-256: 3b8283a47943a76bb21d7eff658e1576fda3961c567571f78db6d4c5e9f32a06
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO poisoning tactic. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The primary attack pattern involves directing users to potentially malicious or phishing websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6608

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://lozipotod.ru/award?keyword=importance+of+evapotranspiration+pdf PDF link annotation
    • http://jaxixojuko.mypressonline.com/treatment_of_anaphylactic_shock.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/bagifojowemapa.pdfIn PDF document text
    • http://price-list.moscow/amsco_ap_human_geography_answer_key_unit_3drzyn.pdfIn PDF document text
    • http://jubisadamafav.22web.org/blueberry_og_grow_report.pdfIn PDF document text
    • http://bestunew.xyz/wxpython_quick_guide5r6h5.pdfIn PDF document text
    • http://ketoxitigojaluk.sportsontheweb.net/wegoramarovobixuzeli.pdfIn PDF document text
    • http://worozoxiw.sportsontheweb.net/tumidiruxatutonekimaw.pdfIn PDF document text
    • http://bizowokare.getenjoyment.net/74932506677.pdfIn PDF document text
    • http://storezone.info/archeology_book1iph6.pdfIn PDF document text
    • https://27158da8-170d-48ca-a528-b8ced62fe517.filesusr.com/ugd/9fc8c3_25b42a99134341cc9786000cf71b5c42.pdf?index=trueIn PDF document text
    • http://soxalisaxofaba.epizy.com/job_agreement_letter_format_in_nepali.pdfIn PDF document text
    • https://329f26c8-0235-4118-8622-173d264d9cf1.filesusr.com/ugd/221f3a_ae193e3836ee47089146f801dc684545.pdf?index=trueIn PDF document text
    • https://6525eaf8-9a42-4119-9fb4-c3d475b3b78e.filesusr.com/ugd/80bfa9_4c7af40744004fac9d2ed27f29fd3684.pdf?index=trueIn PDF document text
    • https://e216d865-ddc7-438b-99b2-64609380b1bb.filesusr.com/ugd/7ae8b3_211793f4a4df46ed90c8069fb87db051.pdf?index=trueIn PDF document text
    • https://e9593579-f51f-4dc6-af55-2543ab512b45.filesusr.com/ugd/37952c_e552809edff44da8a64fb3761e5d951c.pdf?index=trueIn PDF document text
    • https://ea74ff18-003d-4094-8454-8d7e15e33abb.filesusr.com/ugd/50de67_0732e9ef4a064e398eb7da5f1f703c74.pdf?index=trueIn PDF document text
    • https://a43ab9c2-5efb-4cee-ac06-b782a0f5e207.filesusr.com/ugd/4826f5_0636f2f6c08c49de80c764c2de5e52f6.pdf?index=trueIn PDF document text
    • http://butorinowu.myartsonline.com/livre_les_quatre_accords_toltques.pdfIn PDF document text
    • http://lebekuwawelu.epizy.com/beep_test_form.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/tamil_reading_practice_for_beginners.pdfIn PDF document text
    • http://gazunobopa.epizy.com/83592545877.pdfIn PDF document text
    • https://9a86171b-24d8-4f43-8717-687e75280c8f.filesusr.com/ugd/6234e8_920ad1f2824147c5868b93d72179d453.pdf?index=trueIn PDF document text

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