Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d7b51893d1f9781…

MALICIOUS

PDF

203.1 KB Created: 2020-11-02 08:25:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fae0039611360c7ffd65479dd2ff7887 SHA-1: d2f13b61086d97211bb377ca853fa04830552baa SHA-256: 8d7b51893d1f97818a9bcf8ca7ee419fa54318747bee34be92ea0a344ee8e104
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://ttraff.me/123?keyword=did+job+sin+in+the+bible In PDF document text
    • https://nabolonoroxene.weebly.com/uploads/1/3/4/3/134373159/2205226ec70cb.pdfIn PDF document text
    • https://jowesezowu.weebly.com/uploads/1/3/4/3/134366841/sigiregotozu_pomavibedided_peluwozoku_sesefew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7cc3e7a-fc76-4e24-89e1-64f4d186b0bc/dobekiwewojasebutetos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/996537b6-b98f-4d9f-91fc-1d87915e13e9/pizusaviturineto.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/introduction_to_world_religion_and_belief_system_book.pdfIn PDF document text
    • https://s3.amazonaws.com/jaburirarov/puzzle_time_math_worksheets_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5210c94-95c7-495e-9739-f8ba18580d9a/57872226167.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31fb72df-ae1a-4ae3-993b-b79013b52eea/64957383746.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21753ceb-1cc6-4175-aa1b-8adef9e21618/41904000745.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eedda3d8-2f6a-41c1-b54f-b8ad18edf44d/84511845845.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00a65974-feac-4019-8bd3-5b76cc3d8f86/76749260404.pdfIn PDF document text
    • https://s3.amazonaws.com/movodanex/51235604903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2905/2571/files/economia_digital_lista_de_libros.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/roary_the_racing_car_characters.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/10_class_math_ncert_solution_download.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002dfa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFA1 4824 bytes
SHA-256: 423c444a2c2bef82dda3f74e8dec52cb116cbfb8c6023dca91aea32d7b24ec36
font_01_sfnt_off0002f009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F009 15072 bytes
SHA-256: 830ec5a7a65164f0c18f7bf0d4e2f3cf89403dfcb3974914b90491bb0b370d45

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