Malicious PDF — malware analysis report

Static analysis result for SHA-256 163655e369b429ec…

MALICIOUS

PDF

39.9 KB Created: 2020-11-08 05:38:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 2d40e4f10aa8967454c0b39a5968907c SHA-1: 7f17ba1875d3fff0a4300c65ed02728a36b9f3d5 SHA-256: 163655e369b429ec4a6503d7433de430954ea5eb79b039426d3a50660c5f185c
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=ruger+mark+iv+lite+gold PDF link annotation
    • https://rizenorugeworo.weebly.com/uploads/1/3/4/3/134379336/juxugopijitetax.pdfIn PDF document text
    • https://ninukiwipovesot.weebly.com/uploads/1/3/0/9/130969879/f697353.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/tuwofoxuzuritel.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/rakuruganuferu_fenekuwataj.pdfIn PDF document text
    • https://tepunejor.weebly.com/uploads/1/3/4/6/134636279/f9aa23.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/6150779.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/4e62bca4882baf.pdfIn PDF document text
    • https://tewubituzidebu.weebly.com/uploads/1/3/4/3/134359488/nuzawum-dovubizume-josakesomuma-nuzibasojedi.pdfIn PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/rigupom.pdfIn PDF document text
    • https://jedunaxalow.weebly.com/uploads/1/3/1/6/131606453/1729468.pdfIn PDF document text
    • https://josugonu.weebly.com/uploads/1/3/4/4/134488469/1580728.pdfIn PDF document text
    • https://wefekexuse.weebly.com/uploads/1/3/4/6/134685634/4d5a128f51b.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/7d7b6617ab8.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/dfe5471fa8.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://sibamefekin.files.wordpress.com/2020/11/zoziguw.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_off00004eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EEC 4876 bytes
SHA-256: b503b34a75bb3870b2cbcd34fbf4ca25056205b9d64563a05c8a6711ea6b5f10
font_01_sfnt_off00005f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8D 11344 bytes
SHA-256: eee8ac783cff8b56690d3177b8769dec4fd5d6563e5690acc43b906ccaeca616
font_02_sfnt_off000084c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C2 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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