Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f86ea90a18e3f73…

MALICIOUS

PDF

44.2 KB Created: 2020-11-07 03:10:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: e1a7b4dd02501a08fc777d617c4310db SHA-1: 2734372189abcf912cc41ad1828a997d2dd58753 SHA-256: 7f86ea90a18e3f73ed24d579f90eb2f38c602d018e0243493f830eeafa5cf182
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/aws?keyword=classic+leveling+guide+rogue In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386347/normal_5fa5d10d0c9c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408176/normal_5f994e0015657.pdfIn PDF document text
    • https://pakedarisibibo.weebly.com/uploads/1/3/4/5/134501134/ad44c24f9f271.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5fa598e8d91e1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vapite/59640109262.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/gudufeboselew.pdfIn PDF document text
    • https://nizowowe.files.wordpress.com/2020/11/midesifitir.pdfIn PDF document text
    • https://tafexoru.files.wordpress.com/2020/11/3294531957.pdfIn PDF document text
    • https://sikidorif.files.wordpress.com/2020/11/pubilesusikigokawozolupe.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/sagob.pdfIn PDF document text
    • https://dogimevunij.files.wordpress.com/2020/11/68549314887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0479d4c9-d463-4f85-82bc-17b54bf22318/23827084509.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e53555ca-a08b-4f33-b46c-24fbf9ba51e6/15277321339.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_off00006f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3D 5072 bytes
SHA-256: 88191f3eccd2ed54f5bdc5a923340351536758afc887051d3ffb2e3017119caa
font_01_sfnt_off00008087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8087 10512 bytes
SHA-256: 466f999e602a3f77d33c79f0607dd905ceeaf67312d61f5c917c5eff2bb8020a

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