Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e39cebde1420bc9…

MALICIOUS

PDF

56.1 KB Created: 2020-10-12 19:50:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: dfde713ba9ca5040be6eaa095fe24895 SHA-1: dca202f7b08b3b4f95949904beb838e5e1c8d20d SHA-256: 4e39cebde1420bc930d6ef6ef1849709cc89fbb68e9043e5aabb4c9686e702e9
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=livro+ingles+para+viagem+pdf In PDF document text
    • https://site-1040509.mozfiles.com/files/1040509/xemewesibenezewu.pdfIn PDF document text
    • https://site-1039167.mozfiles.com/files/1039167/61649617343.pdfIn PDF document text
    • https://site-1043876.mozfiles.com/files/1043876/69022769465.pdfIn PDF document text
    • https://site-1036772.mozfiles.com/files/1036772/gububokubezisab.pdfIn PDF document text
    • https://site-1043704.mozfiles.com/files/1043704/68457149453.pdfIn PDF document text
    • https://site-1039698.mozfiles.com/files/1039698/70198196566.pdfIn PDF document text
    • https://site-1036733.mozfiles.com/files/1036733/zixageronekasedolasepe.pdfIn PDF document text
    • https://site-1043882.mozfiles.com/files/1043882/xemijapalonoledipojo.pdfIn PDF document text
    • https://site-1036640.mozfiles.com/files/1036640/37334857541.pdfIn PDF document text
    • https://site-1037840.mozfiles.com/files/1037840/44791044574.pdfIn PDF document text
    • https://site-1037251.mozfiles.com/files/1037251/vezogakipi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b4e3d579-b996-4827-8285-83d47b218a5a/jumabiloduguwovimijetura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c47d6f6-9a14-43cb-8061-bac6a407c4e9/72185019831.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60551d8a-f6b1-4e9c-ac79-40933fa157c7/705137691.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc83a753-424d-4f8f-acb0-9ca1bcba4b2d/didanevazovajubajatofa.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C2 5068 bytes
SHA-256: 1fd7ae842f0f78021f093ec0b49760e885dcbe35d4f8d937b6c309a89ffc1458
font_01_sfnt_off000076da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76DA 3644 bytes
SHA-256: 37d2997befd50a25b989b2318d765a6332a5a4846ccb1dc5917ceab256cf1d34
font_02_sfnt_off00008494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8494 12924 bytes
SHA-256: 7ef7d73e882aafab77970cb0504e691e33f0e95d233aa2c517afc6fef452453d
font_03_sfnt_off0000abee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABEE 16800 bytes
SHA-256: 71cef86ebd3435f3796d6dad7e4aeba1d00660c212e46064649e17e3bb16549d
font_04_sfnt_off0000c33f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC33F 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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