Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d876d49e58551ae…

MALICIOUS

PDF

64.2 KB Created: 2020-10-29 19:09:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 153769acf0aa0585ae8face805974d58 SHA-1: a22bd5ee7dd1bdaac667c3eb8e8c1f300af42e89 SHA-256: 5d876d49e58551ae4d0f103d3efc84b2cedcea8275dbea8b10c31c9d034c4b46
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://gettraff.ru/wb?keyword=erd%20library%20management%20system%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4402250/normal_5f90cd069a243.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/regefalu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370268/normal_5f8cc720cc955.pdfIn PDF document text
    • https://rukutatonaneto.weebly.com/uploads/1/3/4/0/134012616/rixuwefori.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/fb55371c-c6a5-4981-be32-73becb61020d/wattle_and_daub_house.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10c867ae-ae19-4711-bd6b-f1ecd8f8145c/xonuzumipito.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/17246952489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24026d37-1ad6-4261-a0f0-3eb31bc7f830/safoweni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2973/9704/files/bixiriki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ee4089d-5673-442b-b3c6-a408e8d15a93/bowotolesijajakal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb46cb4f-969e-473a-961c-f75bd93c1144/damesidonaxibewonusikonod.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_off0000bdfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDFD 5560 bytes
SHA-256: 1b7b8a2651acf3ed14010056c13e8c80b43fdd70c78600c836bac1080808ec4f
font_01_sfnt_off0000d0de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0DE 10508 bytes
SHA-256: fb8e7fe3a3d9153ff84aa776c6b78033a23859c9b5592e0237e236f0c761e732