Malicious PDF — malware analysis report

Static analysis result for SHA-256 67e0a94ff095020e…

MALICIOUS

PDF

40.6 KB Created: 2020-10-25 05:49:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: f4be7672f3ee91c22136442552d3ee45 SHA-1: ffbdb238d830fb82f7af5cb3db8df4216d3cd1c1 SHA-256: 67e0a94ff095020e3a5edca98b47e336da808527583f33b4782112022b87685e
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://cctraff.ru/strik?keyword=transmision+sincrona+y+asincrona In PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/mipepamugexozor.pdfIn PDF document text
    • https://kibutabez.weebly.com/uploads/1/3/4/4/134438896/bonagot.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403561/normal_5f91cf7448d49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5f876209648b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_5f91d1e2ba038.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368488/normal_5f8ef74a65fe1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406454/normal_5f91b7c645e71.pdfIn PDF document text
    • https://fidurelofomus.weebly.com/uploads/1/3/0/7/130740547/zumuxojezudag.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/494d00d36.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/9e092558626df9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f874b27b2ddf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f8e5e10397ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f93b39795a34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374364/normal_5f8b216d40e2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378157/normal_5f94ee6c78914.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006242.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006242.bin)
    • https://s3.amazonaws.com/henghuili-files2/wastewater_treatment_process_steps.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/sazalesowi.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/pneumonia_nursing_care_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/new_opportunities_education_for_life_elementary_student_s_book.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/adding_subtracting_multiplying_and_dividing_decimals_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6870/0868/files/30976764275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1602/6815/files/grandpapas_eleven_month.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8391/5962/files/graphic_designer_portfolio_ideas.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 extracted file (font_00_sfnt_off00006242.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6242 4964 bytes
SHA-256: b45cb00349bad46ee97557e8578a047c1e7722360f866cfc41298ed56136a8ec
font_01_sfnt_off00007313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7313 10052 bytes
SHA-256: 2f4a4b2d7777586d1518ac48a125df53be6e8cf4fb1806deeed9a01df724b010