Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be51e357d000b52…

MALICIOUS

PDF

49.0 KB Created: 2020-11-09 05:43:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: a07156813503c2b10ea94c229b6156df SHA-1: 47d77acec2caa42549478a1871c4edcba750f768 SHA-256: 6be51e357d000b52ac3ec58a43710f7138c96ebf939f744e8c9e4b1c3168159c
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://trafffi.ru/123?keyword=pathos+ethos+logos+examples+julius+caesar PDF link annotation
    • https://tupipukevoluda.weebly.com/uploads/1/3/4/0/134041298/desabekekuz.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/tisimaxof-duromaji-kazawiloda-vaxugusegamare.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403429/normal_5f91cb49c0be3.pdfIn PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/705cc801.pdfIn PDF document text
    • https://tusefekojeseto.weebly.com/uploads/1/3/4/4/134437698/bd1c05.pdfIn PDF document text
    • https://dosaremuxabibi.weebly.com/uploads/1/3/0/7/130739916/zelevitovafu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380539/normal_5f97820e87136.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/merozasopegujibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/377e6cda-ebaa-46b8-b52c-24491aa1eb12/dictionary_of_landscape_architecture_and_construction.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/fovikobabarurumizolub.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE0 4908 bytes
SHA-256: 47c395fcaa85d710741f40b4d65a4f66caf9dffee33f11057d8a075d228a2111
font_01_sfnt_off00007c1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1C 5492 bytes
SHA-256: 6156f13a0dd5c9ae378e30c2be78270f9dbd24a24dc9d3d11b0b95be1678016c
font_02_sfnt_off00008eaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EAF 12096 bytes
SHA-256: 6cc8a1a964c7bad5483af4d9a272ac204223a404876bf0f64c284e5e1cf73fde

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