Malicious PDF — malware analysis report

Static analysis result for SHA-256 425547275919447d…

MALICIOUS

PDF

44.4 KB Created: 2020-10-30 19:17:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 00b63d266a6bee91ecd3d097d8cab986 SHA-1: 67f6f0528243f2d7bd0e13b9c1f187f4ee7a0ad7 SHA-256: 425547275919447d61f3b3eaf67fc0b3cab7bf12ae4fe884d82769a3b3a69ecb
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=hvac%20troubleshooting%20books%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386618/normal_5f918631aaa8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389616/normal_5f9889bd89baa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371806/normal_5f9069410aeb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407057/normal_5f96477e36d4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5f87bfdf398ef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5821/7631/files/kelainan_metabolisme_asam_amino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8489/9011/files/25071770880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3656/4375/files/bavesusozebegex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2028/7639/files/tomtom_mydrive_connect_android_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/9093/3428/files/word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8186/8478/files/articles_of_confederation_reading_comprehension.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7b90980-e72d-4848-bd59-f3a6a97ba01f/risalivas.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000600c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600C 5524 bytes
SHA-256: 5b6bda5d4cafed66bdf99eadba1207c0e097162eb2140144f726df94093f90da
font_01_sfnt_off000072c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C2 10764 bytes
SHA-256: aaa7d25a151a84f66aef46a3bd9dade4cc471ee46ea76b93ef5772f5a933a792
font_02_sfnt_off00009724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9724 4324 bytes
SHA-256: 781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60