Malicious PDF — malware analysis report

Static analysis result for SHA-256 1996362b12a29c90…

MALICIOUS

PDF

34.7 KB Created: 2020-10-07 12:40:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d90ba45961c088a51f1776e801d6b37f SHA-1: 6d63044f0697fb87b33291a1f77a8a74ad37edd7 SHA-256: 1996362b12a29c90fa0d049cddfd29c78692d9af85b376fd042cd116c0f28af8
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://ggtraff.ru/pify?keyword=tu+sin+mi+lyrics+ednita+nazario In PDF document text
    • http://files.beautybyellav.com/uploads/1/3/0/7/130740187/c56870e70.pdfIn PDF document text
    • http://files.toymigos.com/uploads/1/3/1/8/131856381/61b8c1a.pdfIn PDF document text
    • http://waresevux.chainbreakingrecoverycoaching.com/uploads/1/3/2/3/132302915/nupupinamawowak.pdfIn PDF document text
    • https://site-1036646.mozfiles.com/files/1036646/54454123801.pdfIn PDF document text
    • https://site-1044107.mozfiles.com/files/1044107/famavixotirarajasezo.pdfIn PDF document text
    • https://site-1039175.mozfiles.com/files/1039175/47698750857.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa0c7666-eea6-47e2-9272-42749fa3a3c5/lejatanevekaxitamagiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9062/5191/files/problems_caused_by_the_articles_of_confederation_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/6621/2519/files/bic_acoustech_pl-200_ii_vs_klipsch_r-12sw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7957/4717/files/tifubozisek.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_off00004d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D5F 5184 bytes
SHA-256: 6a5c7dc7cf7a1acf7bb37c8b4e649e7601639cb192e4939fa03667b9ba22f8c4
font_01_sfnt_off00005ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF6 9184 bytes
SHA-256: fb2780bcf4aca778cb50c2f66997e9f9ec86b447cb5be1118069cb4510e9894c