Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af544901054c765…

MALICIOUS

PDF

37.0 KB Created: 2020-11-04 15:12:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: df6166b7040c2890e6b47241ab7a46c0 SHA-1: 3ca353a0f91ab9c77a570c8970fc0732681b5e12 SHA-256: 4af544901054c7650d11ef07e38b889b613702e6f367a7fb5fe1da533aab1a51
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://ttraff.cc/123?keyword=edge+interactive+practice+book+answer+key In PDF document text
    • https://cdn-cms.f-static.net/uploads/4420911/normal_5f9e0e0bb56c8.pdfIn PDF document text
    • https://wimixexaselu.weebly.com/uploads/1/3/4/3/134324609/8906356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411512/normal_5f9c8d05d9ac4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383334/normal_5fa07442d6233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378378/normal_5f94a3ef97897.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369310/normal_5f997fc6ec5dd.pdfIn PDF document text
    • https://terobatef.weebly.com/uploads/1/3/4/3/134397950/c386b1cf43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404959/normal_5f9dfb02cbb8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381756/normal_5f8b45892a6e6.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/1/0505/8579/6765/files/24954292475.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3a314a5-8a58-4ef7-a371-2ea6152dc765/83336257518.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bd0f9c4-943a-4af4-bac9-034e10fca5de/fanojuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1185/0407/files/41176581350.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_off000042fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42FB 5412 bytes
SHA-256: 1e87e47b7c4c72e90e78d70fb330a145dae4d61b700f5a78ad10200232ae97af
font_01_sfnt_off00005582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5582 10604 bytes
SHA-256: fc23703cf410be79323e8ff4c2e41c65f469e4d72468c9a20ebe80057849e6ab
font_02_sfnt_off000078dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78DC 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2