Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa3205836c6b07b7…

MALICIOUS

PDF

38.9 KB Created: 2020-11-08 08:02:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 2fb2da7ba9c28e542dbb1e30771b413b SHA-1: 5f06823198903057d7be9c7fa44e0903f2820300 SHA-256: aa3205836c6b07b73e5e23a62e3a6d2fb35ecd52d29b54007605401418cfad46
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=9.3+fermentation+answer+key PDF link annotation
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/4056517.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/mijedusovineti/51021191668.pdfIn PDF document text
    • https://wukifopagoso.files.wordpress.com/2020/11/filme_el_metodo_dublado.pdfIn PDF document text
    • https://jowusenov.files.wordpress.com/2020/11/26569471568.pdfIn PDF document text
    • https://pukewakedal.files.wordpress.com/2020/11/fedifeduvugux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6c69501-e85d-4637-8d85-d21df9a17560/alan_bryman_social_research_methods.pdfIn PDF document text
    • https://segokaguwun.files.wordpress.com/2020/11/fuzoxesageruvorokikotur.pdfIn PDF document text
    • https://kebupud.files.wordpress.com/2020/11/16674380217.pdfIn PDF document text
    • https://begazeporef.files.wordpress.com/2020/11/52354803621.pdfIn PDF document text
    • https://vuzajevud.files.wordpress.com/2020/11/zepifikokizapinunuf.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_off00005bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BEA 5396 bytes
SHA-256: 09b155513bf89cd9dbc87104984a644d27cc52a49dea1c9117c33a156b33f48a
font_01_sfnt_off00006e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E48 9788 bytes
SHA-256: 13fd33793bd29150587329c11850501a477639a9f85891098b96ea19b50a6e23

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