Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a16abfdb072a57…

MALICIOUS

PDF

38.0 KB Created: 2020-10-01 22:29:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-01
MD5: dc83214751a650c0610dc4820ae8399e SHA-1: 6788aff5df8d7ce03f13935d3908801cf5c64d43 SHA-256: 01a16abfdb072a576ea802c50e36323088cd4b663511948d3d3d9127c843d58a
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=sald%25C4%25B1r%25C4%25B1n+timi+2+oyun+kuzusu In PDF document text
    • https://site-1040000.mozfiles.com/files/1040000/34448834176.pdfIn PDF document text
    • https://site-1036861.mozfiles.com/files/1036861/35938323527.pdfIn PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/99311526814.pdfIn PDF document text
    • https://site-1039328.mozfiles.com/files/1039328/xezimufuvozogabapavikejal.pdfIn PDF document text
    • https://site-1038931.mozfiles.com/files/1038931/gugorupigotubef.pdfIn PDF document text
    • https://site-1036751.mozfiles.com/files/1036751/bavoxen.pdfIn PDF document text
    • https://site-1036786.mozfiles.com/files/1036786/67097244338.pdfIn PDF document text
    • https://site-1036996.mozfiles.com/files/1036996/8466378885.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/ed5fe939-2775-4cd4-a45f-1869c6dd670c/74909446298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d5c9d28-b8fb-4d6b-9dca-81a84704f30e/nulezunovunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38cbef04-1f5f-4be5-8c6e-1052ae9a7fc7/10527242652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08a5d7af-75df-49cc-9e2a-c94dbefdd9de/64561913579.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85883f1a-31c1-4977-9e44-52a1cc3f067e/fizijet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/663712b5-99c5-43fb-8cca-26dbc4794dfb/32712133595.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfe84cd3-a793-467a-b78d-932adc4c61f3/74221611658.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cc1902b-d942-46a5-9811-d95f50263aac/duxiborowowojarufifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cae21564-f5b4-49d0-9077-3afd04c49029/30536394282.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_off000052f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52F3 5452 bytes
SHA-256: 510365bc771a938068b6dafbe9943082ac38633cc6242f972015e680c2fd7467
font_01_sfnt_off00006578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6578 11416 bytes
SHA-256: 8df5fd9dfd7917303e3f43446259641a73b3733e450330508ed46cb4c77e727f