Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc743e353ee3a956…

MALICIOUS

PDF

36.6 KB Created: 2020-10-09 15:06:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8e4325025b880f4b6b9106de0062b6e2 SHA-1: 29cb296df875970646ac07b37899f42a8ae27994 SHA-256: cc743e353ee3a9566350d71b04f967d06f71a772c9863810389150b6f92dfd75
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://gettraff.ru/strik?keyword=hesston+belt+buckle+price+guide In PDF document text
    • https://site-1036665.mozfiles.com/files/1036665/lajofaxedoru.pdfIn PDF document text
    • https://site-1036667.mozfiles.com/files/1036667/pavoramenowuxopo.pdfIn PDF document text
    • https://site-1038590.mozfiles.com/files/1038590/29339257797.pdfIn PDF document text
    • https://site-1038927.mozfiles.com/files/1038927/76907577859.pdfIn PDF document text
    • http://tipaderu.thegoodsnh.com/uploads/1/3/1/4/131453247/cb94085d046.pdfIn PDF document text
    • http://files.kenmauronmusic.com/uploads/1/3/0/9/130969032/xurej.pdfIn PDF document text
    • http://megane.nadinesmusicmanor.com/uploads/1/3/0/7/130775176/xiwil.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/1/0459/9270/6207/files/clicker_heroes_mercenaries_tips.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2083/1904/files/kibegakevidowezonaraje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7177/8199/files/45335395086.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d2fa06b-6a27-40da-ab11-ee73d816d06c/velikewuxesozetux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fca785be-d710-4fdb-b3a2-2a0e14de4f33/kanisidakewuxixofopa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3a6e616-b398-4166-8a4c-dd44b24a1582/duzurokilunititiwaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e3a80c4-5af1-4ebd-a8f1-7b3717added1/14374820833.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_off00004fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FB2 5196 bytes
SHA-256: 18d12bd82e65367a9867eea4a4cf8ca1a09b1c0dfedc38bf8fb8bf1208fa3636
font_01_sfnt_off00006168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6168 10736 bytes
SHA-256: 4477766c30bd2e67ab8b0a6cf252cc7b753c3960bb17a6e00199d389bcaae7b5

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