Malicious PDF — malware analysis report

Static analysis result for SHA-256 20eb6490bc5df94f…

MALICIOUS

PDF

41.4 KB Created: 2020-10-09 16:10:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 02ffbf50d424f70f078ff0d84ec4f06e SHA-1: 619150f17e949bc64d5d19bc5a9dbbdf79c7a6a9 SHA-256: 20eb6490bc5df94f07d06aa079abd1297ce3d2948a5d2f5b4021ed704a091c26
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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=what+do+pheasants+eat+naturally In PDF document text
    • http://files.carriedolan.com/uploads/1/3/0/7/130776864/9017134.pdfIn PDF document text
    • http://files.c57racing.com/uploads/1/3/1/3/131398182/6cf5f515.pdfIn PDF document text
    • http://files.mybotoxboutique.com/uploads/1/3/0/9/130969572/xafoxavuza_jozijunepap_bikufewuxuzidig_retenolakamaje.pdfIn PDF document text
    • http://files.imaginationscape.com/uploads/1/3/1/0/131069766/fazavesimezokedisifa.pdfIn PDF document text
    • https://site-1036807.mozfiles.com/files/1036807/sidovexadatot.pdfIn PDF document text
    • https://site-1043941.mozfiles.com/files/1043941/kefukuvefam.pdfIn PDF document text
    • https://site-1039299.mozfiles.com/files/1039299/nokuretaxidutowefad.pdfIn PDF document text
    • https://site-1043176.mozfiles.com/files/1043176/9325628365.pdfIn PDF document text
    • https://site-1036691.mozfiles.com/files/1036691/33123726806.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9548/5352/files/i_love_you_dont_leave_me_letter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6515/6508/files/satikajoripalan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9501/5831/files/dojubasutunikilagugujezu.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_off00006350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6350 5164 bytes
SHA-256: 24cf5622b079baef941ce6860d5c28cf04fdb8c178a7c7798cfa0c7cf56bf199
font_01_sfnt_off000074eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74EB 10540 bytes
SHA-256: 7f260416328e9a1e33b152aca48791ddc8e5807489f3873f1a75bad4bca3783c