Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba715fd5f11c988d…

MALICIOUS

PDF

37.0 KB Created: 2020-11-06 01:49:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 662282e4cf024dcf77710295174659aa SHA-1: 2e7bb7f6068aa78bdadefc04fed11f6660aaa4af SHA-256: ba715fd5f11c988d24d42ca44748287760bb5403dc9b5738832b61e37eca0ff2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://traffset.ru/aws?keyword=genetics+unit+review+worksheet+answers PDF link annotation
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/4883e57ba.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/44d87feaf8ee.pdfIn PDF document text
    • https://xuzojawuwakobo.weebly.com/uploads/1/3/4/3/134312069/nabinogimuruvezim.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/4109476.pdfIn PDF document text
    • https://jugidemavewug.weebly.com/uploads/1/3/4/2/134265355/joletenopuziw.pdfIn PDF document text
    • https://bajusumuke.weebly.com/uploads/1/3/2/7/132741128/7880579.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/1/0502/9540/6756/files/36287259685.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be652ad3-d6f3-478b-887c-da55c31a2722/zulobowikomiganuni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c95bdc5-7b05-4f31-9dfe-14e64896fec9/lezinules.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f938642e-ca33-4057-9aa6-8e2511c2073c/2545580553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ffcc5db-a205-488d-b5da-47ca74e9832d/tataxisujimuwivofafarote.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_off0000520d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x520D 5104 bytes
SHA-256: 14cb6ec84c6b10bc9a43125478b49f6eebd378ae40ec3c7bc05c7fa25c8c1c9a
font_01_sfnt_off00006380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6380 10620 bytes
SHA-256: 284b10157cf5b971cbc146783001af42e121a0a5f40289bef10594c3d5eabc4b