Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d91f33fc34fce9b…

MALICIOUS

PDF

43.8 KB Created: 2020-11-08 21:10:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 03d0bad40531a92e608a845f1dd174bc SHA-1: c0ab8ef1f9a4d80f4263ebe4b6bbdc4137d6df3e SHA-256: 2d91f33fc34fce9b498d36b482632c4481bafd8e3675ad9dc45d01f5eac1a6af
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=phantom+troupe+leader+hunterxhunter PDF link annotation
    • https://sopodepewujo.weebly.com/uploads/1/3/4/3/134340903/7359231.pdfIn PDF document text
    • https://soxajenukaru.weebly.com/uploads/1/3/0/8/130874283/6597871.pdfIn PDF document text
    • https://mezuminekafowiw.weebly.com/uploads/1/3/4/3/134346911/3840957.pdfIn PDF document text
    • https://lisilabonefep.weebly.com/uploads/1/3/4/5/134527166/debifigelimule-waziloza-narebawene.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/gopiv.pdfIn PDF document text
    • https://jojifowasa.files.wordpress.com/2020/11/93817059893.pdfIn PDF document text
    • https://zomizekakigo.files.wordpress.com/2020/11/67515823558.pdfIn PDF document text
    • https://fovekurosuto.files.wordpress.com/2020/11/dame_de_beber_marcos_barrientos.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/44663645498.pdfIn PDF document text
    • https://bifudavoz.files.wordpress.com/2020/11/sawubigefifijajiwon.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/wulotekoguxixewagevoxe.pdfIn PDF document text
    • https://duwijuvi.files.wordpress.com/2020/11/exploring_biology_in_the_laboratory_3rd_edition.pdfIn PDF document text
    • https://toderavofi.files.wordpress.com/2020/11/carter_stabilizer_guide.pdfIn PDF document text
    • https://lodoxepal.files.wordpress.com/2020/11/vibinofa.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_off00006c38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C38 5092 bytes
SHA-256: 5f9011d820f8c218afe379fea8f66e704fa2e18b8b7af5ce253baa9ee738fe64
font_01_sfnt_off00007d5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5C 10780 bytes
SHA-256: bc48da5c4641c13d2b6be0d227042b9e879601b72e81d050e388c6df3f518a81