Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d3a33807e04401f…

MALICIOUS

PDF

67.9 KB Created: 2020-10-31 05:10:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-14
MD5: 37fd413a74879b25837c826fcf81af6a SHA-1: a133c38cc9e5f4157f0f68fcb94e280e947251ba SHA-256: 0d3a33807e04401fb3ff12157507fba07a74788c25550fc58faf032540d1bb30
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/wb?keyword=danis%20weber%20classification%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369313/normal_5f931ce17d2e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369922/normal_5f8964024688d.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/edbac5ed-c160-4970-9a06-2865f842462b/tagogozutajimigimewuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9594/0519/files/95751213350.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/58117558505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7707/4588/files/76593779807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/4450/3191/files/spending_plan_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0345/1813/files/gilupudikuvuvofuvoleme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/5278/2527/files/optimal_asset_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7744/9366/files/fetewotaxojexepilawageru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3955/5228/files/66099055917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1087/3273/files/44398431644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2650/4616/files/kinereragerotawob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2203/2308/files/jurnal_gangguan_metabolisme_lemak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7882/1047/files/nukepavelofekuropodar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9270/3915/files/55811430506.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/bancarizacion_peru.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE16 5380 bytes
SHA-256: 8c37654f152973f7601c2f95d6bb13b867ac8000c13087ee041b06a742d8de42
font_01_sfnt_off0000c082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC082 14748 bytes
SHA-256: fd210af644f5a8cc06bee926731b62221b1b347a0dad33d6041fef0e1ff0bba7
font_02_sfnt_off0000ec66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC66 16212 bytes
SHA-256: ad112906b5ff42821d3dd128034d1c9fc3dd93adeb9151b8e5de1aaa8bf68354

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