Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdce67401703cfcb…

MALICIOUS

PDF

41.7 KB Created: 2020-10-27 08:31:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9426942a77bfce6d12324a922582bfe8 SHA-1: dcd331f8a9b19ca203c7cc1670f3d3969768dbe3 SHA-256: fdce67401703cfcb3e2004f59bf1c9d0a6ba5a5062efd207e2c77d7773bebc6c
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 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://gettraff.ru/123?keyword=super+metroid+zelda+randomizer+rom In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5f89d52c7b9eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f8a445bd3d57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376629/normal_5f8e862ec6724.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406464/normal_5f9467cdbd533.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5916/2521/files/28252391586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/9351/7222/files/class_a_uniform_army.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6443/4589/files/62741506673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2315/7416/files/leaf_blight_of_rice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/4999/6447/files/21405778047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33531574-ce3d-4387-a953-cd3be5bbb7fa/leguvalejinagopu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f65a86e9-69c9-4322-8b0a-e8166ba60846/bafumufuxedego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de7eec21-1ba0-4e99-bcf3-55925dc4f06b/11244168851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7289/4629/files/plague_inc_simian_flu_normal_strategy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5670/1346/files/lurep.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/applied_behavioral_science.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/gadapojodutupovipolut.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/cissp_exam_prep_questions_answers_explanations.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/81643078450.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_off0000646a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646A 5080 bytes
SHA-256: 6e51805d3b7383e088dae3b4e1db182c21941836f4cb71dfc310ee3ee316e56e
font_01_sfnt_off0000759a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x759A 10636 bytes
SHA-256: 3eb3499f6119c87f33d24d0ca4537c518c2ab11b54050fa1bedf3e4072cd0faa

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