Malicious PDF — malware analysis report

Static analysis result for SHA-256 4453dd499d34c46f…

MALICIOUS

PDF

55.2 KB Created: 2020-10-12 03:00:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-11
MD5: e9b0212f803303d31446aff3d7ef7909 SHA-1: f9e3a7a3f09223e0a5be6caaad144aafa7ce2cff SHA-256: 4453dd499d34c46f0378c65e6592c436abf8e2589546584936c677de2d93830e
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=light+for+visual+artists+pdf+download In PDF document text
    • https://site-1043248.mozfiles.com/files/1043248/duzenoturudidera.pdfIn PDF document text
    • https://site-1037111.mozfiles.com/files/1037111/40650492937.pdfIn PDF document text
    • https://site-1036907.mozfiles.com/files/1036907/mofefusodi.pdfIn PDF document text
    • https://site-1042604.mozfiles.com/files/1042604/wadufofa.pdfIn PDF document text
    • https://site-1039846.mozfiles.com/files/1039846/75677595044.pdfIn PDF document text
    • https://site-1042781.mozfiles.com/files/1042781/71536283924.pdfIn PDF document text
    • https://site-1036716.mozfiles.com/files/1036716/porekukatalive.pdfIn PDF document text
    • https://site-1036840.mozfiles.com/files/1036840/kikolapubogonedupupunu.pdfIn PDF document text
    • https://site-1036805.mozfiles.com/files/1036805/94185315480.pdfIn PDF document text
    • https://site-1038967.mozfiles.com/files/1038967/tesofoziw.pdfIn PDF document text
    • https://site-1043297.mozfiles.com/files/1043297/kupiminedigugarov.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/a5a79e6d-0623-4b49-8c14-021e619611e6/dixewomivenegida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b5dd5a7-0445-48b1-aa82-825039101a15/91694794977.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B97 5160 bytes
SHA-256: f9246b0471641a34373fb495ff579172bba68d920808cf00c1146871c33e4586
font_01_sfnt_off00009d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D37 10732 bytes
SHA-256: eebcab09e022529911f9164b280377f1bea84488bab673e0b79a513b236d209b
font_02_sfnt_off0000c1b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B5 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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