Malicious PDF — malware analysis report

Static analysis result for SHA-256 02501128fbee9b3f…

MALICIOUS

PDF

37.4 KB Created: 2020-10-13 23:41:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d93d47e7a22c6f1556c1fe400a0408ec SHA-1: bf31bcd9c3a8e8f95b9fc0f1d67e7a4301ac2fd2 SHA-256: 02501128fbee9b3fc76f2b184913d1f6d88a364d24a1bf0f7d68d6f645368e85
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://cctraff.ru/strik?keyword=uk+tights+size+guide In PDF document text
    • https://site-1037251.mozfiles.com/files/1037251/19163972764.pdfIn PDF document text
    • https://site-1043536.mozfiles.com/files/1043536/88873351704.pdfIn PDF document text
    • https://site-1036685.mozfiles.com/files/1036685/nanobebijez.pdfIn PDF document text
    • https://site-1043941.mozfiles.com/files/1043941/nowezil.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/godekux.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/7922058.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ramugimexixepaba.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/nukunuraki.pdfIn PDF document text
    • https://site-1036977.mozfiles.com/files/1036977/fuxeniboxava.pdfIn PDF document text
    • https://site-1042674.mozfiles.com/files/1042674/kosawitopawuriva.pdfIn PDF document text
    • https://site-1038737.mozfiles.com/files/1038737/24449179338.pdfIn PDF document text
    • https://site-1039991.mozfiles.com/files/1039991/jasiwanazo.pdfIn PDF document text
    • https://site-1040681.mozfiles.com/files/1040681/kowasupebinaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000562f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x562F 4856 bytes
SHA-256: d687e17d758695c9fd0efc691c83b209b2522ed62df50484c668106777caad3e
font_01_sfnt_off000066ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BA 10096 bytes
SHA-256: 33309fb309c6ad30f1f999e7b9dc45292855f092f5ee56e30ddb7531adc90886