Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7a684ce4663ca4…

MALICIOUS

PDF

45.7 KB Created: 2020-11-06 17:52:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: c3fd003196d822069da77e7a68efc425 SHA-1: ab6abe25f84ad32112245f4350e5b022bc8f7f97 SHA-256: 1e7a684ce4663ca4fff37eccc32c7e44096558e42dc8ef01b85a256861259642
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/123?keyword=latin+kings+manifesto+constitution PDF link annotation
    • https://xinifusat.weebly.com/uploads/1/3/4/3/134321574/6025326.pdfIn PDF document text
    • https://jajewivazag.weebly.com/uploads/1/3/4/4/134491582/tubozuwaliviva_kakototunatifut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f874c823c8f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379733/normal_5fa1c552ddb11.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://fidunonip.files.wordpress.com/2020/11/8625666511.pdfIn PDF document text
    • https://tuxabavijig.files.wordpress.com/2020/11/37940387668.pdfIn PDF document text
    • https://siwereja.files.wordpress.com/2020/11/movizedopeviv.pdfIn PDF document text
    • https://nelavikix.files.wordpress.com/2020/11/73736449421.pdfIn PDF document text
    • https://gorujugiximu.files.wordpress.com/2020/11/karipevo.pdfIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/merozasopegujibe.pdfIn PDF document text
    • https://tevarew.files.wordpress.com/2020/11/88608638079.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_off000066d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D2 4960 bytes
SHA-256: dfd99c63ffc4ea2181eabde83458a9b16c43c7dde71f5f73df128ffd3b57cf7a
font_01_sfnt_off000077af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77AF 10832 bytes
SHA-256: 0c6cebe8d774dddae13043bc026c0c629c23edfc53d2a82209506f7a167ff959
font_02_sfnt_off00009c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C55 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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