Malicious PDF — malware analysis report

Static analysis result for SHA-256 20534e9090a564f2…

MALICIOUS

PDF

41.6 KB Created: 2020-11-04 06:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-19
MD5: 3e9aca48ca8363bd062887eb6938b9c8 SHA-1: 43a90ec94dbc98ad7568d4544729fc67669579e6 SHA-256: 20534e9090a564f258f3fa72489c3e862901835c19359e613ea06748ad81d37e
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=online+coin+master+hack+here In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369162/normal_5f9879e6ac9d3.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/une_vidence_agnes_martin_lugand.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382781/normal_5fa141b40bc48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414159/normal_5f959187278be.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/top_30_engineering_colleges_in_hyderabad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_5f9bfb7111f20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413835/normal_5f9979084e380.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/23106323365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416939/normal_5f95e63b67518.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417046/normal_5f9dd9ad4cba9.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000061c9.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000061c9.bin)
    • https://cdn.shopify.com/s/files/1/0506/4297/6956/files/p_series_vs_p_series_quantum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c31124b-dabf-44db-85fb-71bd08def6ce/5822828269.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_off000061c9.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C9 5132 bytes
SHA-256: 082ffe5b6d2c9ca3a9aa304ad3f725251852a55636e777eba1fbe2a66b288441
font_01_sfnt_off00007306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7306 11536 bytes
SHA-256: 68c78bc5ae9f07980a1866f6f35ff42ea100d62a9796800ec3fccf6f7e6ea394