Malicious PDF — malware analysis report

Static analysis result for SHA-256 4457339c10a8cd99…

MALICIOUS

PDF

36.0 KB Created: 2020-10-14 15:41:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-11
MD5: 4d6107686c718bde5c3068f41432cc96 SHA-1: c46ec3676f023fd20732b9fb9c98a3a9ab58ee26 SHA-256: 4457339c10a8cd992f51babdbb8eed6e402f194030b7b23d2ef2ebc3f68d23ef
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://ggtraff.ru/strik?keyword=clastic+hydrocarbon+reservoir+sedimentology+pdf In PDF document text
    • https://site-1040317.mozfiles.com/files/1040317/90446757992.pdfIn PDF document text
    • https://site-1040006.mozfiles.com/files/1040006/62573846100.pdfIn PDF document text
    • https://site-1038770.mozfiles.com/files/1038770/kumupujoka.pdfIn PDF document text
    • https://site-1042835.mozfiles.com/files/1042835/wefanajoruzevexup.pdfIn PDF document text
    • https://site-1042271.mozfiles.com/files/1042271/legodikugedidozukater.pdfIn PDF document text
    • https://site-1041784.mozfiles.com/files/1041784/61998258385.pdfIn PDF document text
    • https://site-1038714.mozfiles.com/files/1038714/lanilalolu.pdfIn PDF document text
    • https://site-1039509.mozfiles.com/files/1039509/40880507947.pdfIn PDF document text
    • https://site-1043893.mozfiles.com/files/1043893/fadoxedaworep.pdfIn PDF document text
    • https://site-1040213.mozfiles.com/files/1040213/48689765869.pdfIn PDF document text
    • https://site-1044009.mozfiles.com/files/1044009/nijenarefikegexopabav.pdfIn PDF document text
    • https://site-1039514.mozfiles.com/files/1039514/febisariribifedivusut.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
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000040c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40C7 5684 bytes
SHA-256: bbbb805708c1bd9142469e7b1a010655faf990bf5d448cf070b267ec4d5d5c1b
font_01_sfnt_off000053f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53F0 9720 bytes
SHA-256: 1c1b34efc2b56ba54cbd1bc23bf323ceb7ee78f08c69ef98c813911e362a2bae
font_02_sfnt_off00007518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7518 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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