Malicious PDF — malware analysis report

Static analysis result for SHA-256 196b59a47de74914…

MALICIOUS

PDF

38.9 KB Created: 2020-11-04 01:07:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 067663766a3f9bcc8861844761a95ed9 SHA-1: 0f05a2ba519c0482b76b6ceb10c9ef26aba6d2bb SHA-256: 196b59a47de749142d29a485117a9e18342d78f854cb732da6d411981cb4738d
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.me/123?keyword=wma+rogers+nickel+silver+knife In PDF document text
    • https://nupejaxisolerez.weebly.com/uploads/1/3/4/3/134348845/4829521.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367621/normal_5f89534e17fb8.pdfIn PDF document text
    • https://dunidapakepew.weebly.com/uploads/1/3/4/3/134319263/0be540b3e681321.pdfIn PDF document text
    • https://lasaveba.weebly.com/uploads/1/3/4/4/134488520/4f57695.pdfIn PDF document text
    • https://xarupome.weebly.com/uploads/1/3/4/4/134469096/gujibobe-fekiforijar-luminex-bemejokexekeke.pdfIn PDF document text
    • https://dumaxenuwumav.weebly.com/uploads/1/3/3/9/133997891/7975956.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/02bd9855-220f-4fa8-a600-b89baa70b23f/gijikudasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec4eda77-ebe9-4e79-b075-8617dd9632ab/2001_ap_psychology_free_response_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5462/0059/files/midamibekifejinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88330c25-f410-4bf7-9ec7-ba8d3b8ec933/99610088322.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22b53395-b5c0-46fb-bce9-1b5fd929d35e/bapak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5caf1106-a2a1-4ae6-b71b-91eab82365da/2760455662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7545/9992/files/xebifonubafudoxusevevegu.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_off00005846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5846 5340 bytes
SHA-256: 70149c3eab3369d48bffc2c45231191dbfea22f2300c2b38d71fde3f6bdaf802
font_01_sfnt_off00006a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A74 10740 bytes
SHA-256: debf5f8a98c84055696c9556059f65e50375f3ede68b9d2c1ad9260c72018c85

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