Malicious PDF — malware analysis report

Static analysis result for SHA-256 84c32a55973bc1e6…

MALICIOUS

PDF

36.8 KB Created: 2020-11-08 08:53:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-02
MD5: 71a80158fb95b73ec611e404419e16a6 SHA-1: f403b72d3deecbb9a8bb838b54a7f6af489b06bb SHA-256: 84c32a55973bc1e6cf0aa432800eb2e0d07c4691a203ffd6ef7348bdccfea983
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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=spyder+victor+2+paintball+gun PDF link annotation
    • https://liwifaxuje.weebly.com/uploads/1/3/0/8/130874244/korolo.pdfIn PDF document text
    • https://lipitedo.weebly.com/uploads/1/3/4/3/134380968/3983871.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367680/normal_5f943e18a3058.pdfIn PDF document text
    • https://nasinapalu.weebly.com/uploads/1/3/0/7/130739684/c280bac.pdfIn PDF document text
    • https://pafirolexorawu.weebly.com/uploads/1/3/4/6/134612045/xamij.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004e3b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004e3b.bin)
    • https://mukawikakava.files.wordpress.com/2020/11/sajadanamanewajaxadan.pdfIn PDF document text
    • https://dogimevunij.files.wordpress.com/2020/11/68549314887.pdfIn PDF document text
    • https://sugunuvex.files.wordpress.com/2020/11/setuxusakenevivabutumoxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/620777ca-bc58-4fd9-9551-f2bbfb70f8d5/richard_shell_bargaining_for_advanta.pdfIn PDF document text
    • https://pafegum.files.wordpress.com/2020/11/xumakosokidazok.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 extracted file (font_00_sfnt_off00004e3b.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E3B 5600 bytes
SHA-256: f4218ee5052076e76796a57063f56148729ac281ef97226fc1b0faf6717302e3
font_01_sfnt_off00006164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6164 10916 bytes
SHA-256: 2c6545ff0e4e4654a6f24f3ed2c17c8a11814c073bd907e8a3fbc218dc23a338