Malicious PDF — malware analysis report

Static analysis result for SHA-256 8474167b97531793…

MALICIOUS

PDF

54.3 KB Created: 2020-10-03 04:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-05
MD5: 83c9baa70ada138a61bbc8b71d21568e SHA-1: f7d8e7e2a19e6b0d43ea8642b15d2d3e3efe55aa SHA-256: 8474167b975317937ebe59eda03962c3b003dcc96013a060452ee7d2494196a0
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=perimetro+abdominal+del+recien+nacido In PDF document text
    • http://files.minnowphotos.com/uploads/1/3/1/8/131858661/fca5b.pdfIn PDF document text
    • http://sudunesa.thequestofjz.com/uploads/1/3/0/8/130814229/koninoxawibipop_bakukarelema_sukadawilex_bipadozebozoga.pdfIn PDF document text
    • http://valifuba.aperfectinjustice.org/uploads/1/3/0/8/130814124/jajoviz.pdfIn PDF document text
    • http://files.adgvegascon2020.com/uploads/1/3/0/7/130776073/nomapofalokomiwojana.pdfIn PDF document text
    • http://tozer.enlightenedastrologycourse.com/uploads/1/3/1/4/131408899/5de9db9d0f.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008443.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008443.bin)
    • https://uploads.strikinglycdn.com/files/991c4da3-8ed5-4a6b-927f-d5eced051284/18519742905.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3665aed3-cba1-43fb-9e0f-b6f05d01c8ba/8592826725.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d80fe538-50a9-4e4a-8fa0-660d342c5151/10437037300.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ea8d559-f42e-48f6-a003-ca4a941c988d/33242350003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d6dd30f-d7ea-4413-bb7b-9a0c6acf655b/31570546697.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d54280d2-c7f4-4e6d-b6db-a0bcf6982c13/36844488919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d36c24c-39a2-482f-89a2-cba81fe77b13/rafoxedigog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6616173-a6e8-4b5c-9a53-b2eca83c8f04/6984279096.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53346ce1-e7ad-4a33-9fb6-f5846cd4fe47/gufixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1d3408d-6a60-42bb-830a-f67b6b672c82/zewopotogebapasokojijodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acef143b-d54f-46c1-8d16-bedaa945ea72/sawamiwizo.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 extracted file (font_00_sfnt_off00008443.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8443 5048 bytes
SHA-256: 4c7c8236c102ede338450ca2d429605033cd7ce52b994e8a920e3ad1254a53c5
font_01_sfnt_off00009550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9550 18452 bytes
SHA-256: ed589c232f6bf7b70c0c46edc10661236569650bd6da36c09c4d8f93dadbfe77

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