Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fcbddf7e115b2a6…

MALICIOUS

PDF

71.1 KB Created: 2021-02-23 02:46:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0bb6137e48f2f672279921452208168a SHA-1: e5f97c825ec926881bdff4fafad15d97dfd40882 SHA-256: 4fcbddf7e115b2a66e8ab2beb43b02743612a4bd73a85f729d3e0a72a2cab3ad
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://druttle.ru/wix?keyword=multiple+allele+crosses+unit+3+genetics+answers PDF link annotation
    • https://vukujaxirebes.weebly.com/uploads/1/3/4/1/134108713/vedogonidopumujixex.pdfIn PDF document text
    • https://refaxoke.weebly.com/uploads/1/3/4/6/134602084/lefiruminatosuw-moxopol-xotak.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/giGq8gh/january_uprising_star_game_mod_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477400/normal_5fe1cf4cbd71d.pdfIn PDF document text
    • http://kikudesazogug.22web.org/60102557446.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453142/normal_60141a09d96cd.pdfIn PDF document text
    • https://zalinojawovuga.weebly.com/uploads/1/3/4/8/134886974/3643581.pdfIn PDF document text
    • http://vizit.store/2001_mazda_protege_repair_manual_fre0lh6l.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/zonivezada/investment_return_analysis_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/christafari_how_great_is_our_god.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_off0000d744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD744 5360 bytes
SHA-256: 16412e7112401875ce46f93a8a4f3bc37deea2fff59c97cec2d52a0ddec14773
font_01_sfnt_off0000e9ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AC 10496 bytes
SHA-256: 9883bbd78e4d9a4188e80e2fbb8d0833ca50022aaadca439d8c45a20d0c04663