Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9a5f91f80dafd3b…

MALICIOUS

PDF

34.5 KB Created: 2020-11-06 18:50:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 4bd60aed77c41066399609207db7f97b SHA-1: c1585a681d6391fd1d4e10eec38849d07be4243c SHA-256: e9a5f91f80dafd3ba77dba11ab7a865c425e2fba0fa0d720ac00b71b99d14852
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=holt+geometry+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5f8bea5935623.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389370/normal_5f97ee190588e.pdfIn PDF document text
    • https://nibuxapevu.weebly.com/uploads/1/3/4/6/134601724/dijupozovexo.pdfIn PDF document text
    • https://fujamimoxelak.weebly.com/uploads/1/3/4/6/134601663/zoxer.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/1b39a9d54.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://wotenopofe.files.wordpress.com/2020/11/budixaw.pdfIn PDF document text
    • https://dowuwiridewe.files.wordpress.com/2020/11/samomivapabaxitaba.pdfIn PDF document text
    • https://pubosepiko.files.wordpress.com/2020/11/buttress_thread_chart.pdfIn PDF document text
    • https://todafoper.files.wordpress.com/2020/11/lefonosafoges.pdfIn PDF document text
    • https://detupuluxef.files.wordpress.com/2020/11/63220981270.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/3326202660.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_off00004874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4874 5320 bytes
SHA-256: 7bdcc0ac9691bdeec7b4bd16dc484d52c73a580ab33659c24057e48187f75254
font_01_sfnt_off00005a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A74 9924 bytes
SHA-256: fad9ec021aee35978c14010cca7ebf9e536615fe02ef9985d434ef339b80294a

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