Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b33a3ce2d9657f…

MALICIOUS

PDF

50.4 KB Created: 2020-10-15 02:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 7ee5964fc50181e65cda990efc575b80 SHA-1: db5f09c133b2ee6ad264d3b68fa987067f73c24d SHA-256: 72b33a3ce2d9657f5b9da4bc6d3fb682bc036e219702127044ea029635234fb0
184 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.
  • 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=linear+regression+spss+interpretation+pdf In PDF document text
    • https://mogezisatizate.weebly.com/uploads/1/3/0/7/130775403/binukevuzimuk.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/3141e9c4af8e6.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/3343619.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/jixidused.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/4235942.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/6d371b4a243e2c5.pdfIn PDF document text
    • https://site-1036868.mozfiles.com/files/1036868/98442492360.pdfIn PDF document text
    • https://site-1040998.mozfiles.com/files/1040998/9190651098.pdfIn PDF document text
    • https://site-1038985.mozfiles.com/files/1038985/eserviceinfo_service_manual_data_sheets.pdfIn PDF document text
    • https://site-1036868.mozfiles.com/files/1036868/35778227265.pdfIn PDF document text
    • https://debasomi.weebly.com/uploads/1/3/0/7/130739769/c90b8947b5.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/sixukejomiwewanage.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/rotesojelunemiroto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f871120df65a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368227/normal_5f876323cec75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367017/normal_5f878c4797818.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f877b58734f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/8861/0215/files/legelabosaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8793/0562/files/37959578709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1127/1588/files/70808217344.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_off0000866f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x866F 5116 bytes
SHA-256: 2ac41f55deae2292a30360816cc55f992fd28b1f72af599073a86ee713fc5bf2
font_01_sfnt_off000097e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97E7 10540 bytes
SHA-256: 47ccc532c566395c83fc816ba6652f86b23bcd4c94380dec848b72fa7a9236db

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