Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f66c41149e498e6…

MALICIOUS

PDF

40.8 KB Created: 2021-03-29 01:56:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bfd246a6f57193b76a1a420ebe57db4d SHA-1: f047e999670d912cb770c43b2d1fd0d1897d80c4 SHA-256: 6f66c41149e498e68d0ac79bed5a7571ce1cef60fbf3065634561a43271fc8c3
84 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as a malicious screenshot lure, designed to trick users into clicking embedded links. The heuristic 'PDF_IMAGE_LURE' indicates it's an image-heavy document with an action trigger, typical for phishing. The ML classifier also flagged it as malicious. The primary malicious URL identified is 'https://baarspo.ru/award?keyword=books+of+the+bible+in+pdf', which is likely used to deliver a secondary payload or redirect to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9016

Heuristics 4

  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://baarspo.ru/award?keyword=books+of+the+bible+in+pdf PDF link annotation
    • http://duwudivusupo.mygamesonline.org/58475560500.pdfIn PDF document text
    • http://kufafukedexepix.mygamesonline.org/ap_calculus_review_book.pdfIn PDF document text
    • http://mezajozugabaso.getenjoyment.net/enterprise_beginner_teacher_s_book.pdfIn PDF document text
    • http://xamojopilupivo.scienceontheweb.net/kidanuganexeguloweva.pdfIn PDF document text
    • http://finonit.mypressonline.com/struts_2_documentation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d5e1b2b-3e57-411b-98af-26a9eeacd6c3/55235132804.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6133114f-d417-4fa9-a695-806fdaef29d6/upgrad_data_science_course_fees_quora.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/583c8d84-9d7c-4ce6-ae2f-d7ff1ec15726/ac_joint_injury_treatment_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/nccn_guidelines_colorectal_cancer_2019.pdfIn PDF document text
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_ccdbb123845d470892bfe9b0b685632d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9f03876-fde9-48a4-bcec-6f318a536417/55213646566.pdfIn PDF document text
    • https://409b2d23-5c1d-402e-97df-26c0da9299b0.filesusr.com/ugd/2e3d42_d59e607fa22f4800b035c853c1e98299.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/de0519aa-d5d5-47ce-b718-e5f354794953/43818285538.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/56701458906.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeac2209-c854-4b7f-b25a-8e15c2fafb4b/how_to_do_conditional_probability_in_r.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98a096be-c8b9-4106-b383-4dcb7a62468f/how_to_turn_shop_vac_into_pump.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/1487504290.pdfIn PDF document text
    • https://29c5b005-6627-40e3-9da1-9f9d3dbc34dc.filesusr.com/ugd/7ad284_83dd6606087147d5bcf2ea5d1ac857d1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/free_conjunction_worksheets_for_2nd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/lapirokukojar.pdfIn PDF document text
    • https://7c8f45b7-e058-4e27-bccd-8ee7dcb26900.filesusr.com/ugd/d5cf39_f0fba5290b014b76873fd783e7c15657.pdf?index=trueIn PDF document text