Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe5bd0bcf90c49b4…

MALICIOUS

PDF

47.3 KB Created: 2020-11-02 20:05:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8127f177fbaaa3948a7f3686cda0ef74 SHA-1: a7c21129497546037413b7fa08e5070d5d2b3af9 SHA-256: fe5bd0bcf90c49b49be3a928b24b24bcfaa3b157b20c3994d5b8bab469fcf3ea
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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/aws?keyword=university+of+michigan+debate+camp In PDF document text
    • https://fizolapojola.weebly.com/uploads/1/3/1/3/131383549/tiwawewekenirogufa.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/faturagowik.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/zubudozamepo.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/5534626.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_5f87d2ea4f6c9.pdfIn PDF document text
    • https://zelikozuka.weebly.com/uploads/1/3/4/5/134594864/1801723.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369933/normal_5f888d71bdbeb.pdfIn PDF document text
    • https://zilavexeredora.weebly.com/uploads/1/3/0/8/130874610/1957136.pdfIn PDF document text
    • https://lekinowi.weebly.com/uploads/1/3/4/4/134476644/norutur.pdfIn PDF document text
    • https://vewusijonaw.weebly.com/uploads/1/3/4/4/134489037/fogux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/teximikamukubo/the_forgotten_500_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/sapemepasefaguso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/pltw_activity_2.2.1_concrete_pad_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/cengage_maths_calculus_book_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE7 5616 bytes
SHA-256: 623408246692b36e8552bf5402af02d2abb8b90c778a0ebe2f4343b021dddc5e
font_01_sfnt_off00007dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD5 10716 bytes
SHA-256: fc0ae75d659798d4b9b35909414c7278c03bdefc7726f7dca8ca9176b4b28a82
font_02_sfnt_off0000a247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA247 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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