Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e3925e5adf6de4e…

MALICIOUS

PDF

31.2 KB Created: 2020-11-04 09:50:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 607300598beccf775fbbd57ed85ce02d SHA-1: dcaa474fd22338f687f17f111a319c635011e14b SHA-256: 8e3925e5adf6de4ef28bc1696be0323f38f84eb626f29d13d2af234b96203d73
94 Risk Score

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 1.0000

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://cctraff.ru/123?keyword=the+muffin+man+greg+and+steve In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366949/normal_5f8757cf0db5f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/binudosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e64d771-b3b1-4ab4-b062-da4438e0d256/29423746032.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/kefitago.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/29347699661.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/broken_halos_chords.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7af214be-8193-4b0e-aca0-b3bfa73dd66c/directions_to_brownstone_paterson_nj.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/sennheiser_hd_202_ii_professional.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/oswego_math_games_multiplication.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/lukajomifizirarerij.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/bowflex_manual_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/babilujenibipenadodef.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_off00003f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F02 5296 bytes
SHA-256: 24680bba34c257c7bb3a7d7e226289141d2e0345f2cd7309d15df5a3db92b8e0
font_01_sfnt_off000050e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50E4 9280 bytes
SHA-256: 6ce434af01d352fdeee80b53aa3aa2b9b78d23685faf48a78998e2cda771616a