Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2bd8a68490f1e46…

MALICIOUS

PDF

37.1 KB Created: 2020-11-08 00:56:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 69e4409882312648f3aa8edf824ba8de SHA-1: 6ffc26605cc4e8f254489ea4b4b3f2db94e76115 SHA-256: f2bd8a68490f1e4642c5505ddf545b89b1b0b04aa829063b5e32bfa5cd4217b4
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=scoggins+dickey+engines PDF link annotation
    • https://wagizubim.weebly.com/uploads/1/3/4/4/134470033/najuso_mabadejupasawi_suguviduposexi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369923/normal_5f9237ef523ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366041/normal_5f88a6b9efcd5.pdfIn PDF document text
    • https://purolejomi.weebly.com/uploads/1/3/0/7/130776639/6897040.pdfIn PDF document text
    • https://nukubutoti.weebly.com/uploads/1/3/2/3/132302768/jelibewadowefeganu.pdfIn PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/todonegutiz_nijufutajaw.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://s3.amazonaws.com/zirojopemup/burma_history.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/nozemapopumetuve.pdfIn PDF document text
    • https://verowozebig.files.wordpress.com/2020/11/52146513009.pdfIn PDF document text
    • https://rebusudes.files.wordpress.com/2020/11/31763742790.pdfIn PDF document text
    • https://vejegomume.files.wordpress.com/2020/11/kademewepel.pdfIn PDF document text
    • https://selogum.files.wordpress.com/2020/11/yowhatsapp2_new_version_2019.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_off00004796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4796 4744 bytes
SHA-256: 8d89db61255be1aa6c782c60f05f86d413fe1acc5306b7e8540450627db82e5c
font_01_sfnt_off000057bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57BB 10028 bytes
SHA-256: 19c9a0d7a3f5c766a6fc6460093fdc42259529df832eb45412d14e557c73c2c1
font_02_sfnt_off000079ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79ED 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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