Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3f9b4033b0f945…

MALICIOUS

PDF

56.0 KB Created: 2020-10-29 18:24:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 13aca217641d32abab686ec05878311b SHA-1: 4bd4866f0f48c78d157bfcb7f3f5141523bd88ca SHA-256: 4e3f9b4033b0f945bf8936c655b0a793dd8b265cc4b018727703703cc8b10ac0
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://ttraff.com/123?keyword=history+igcse+2020+notes In PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/puwogupumobukolerar.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/zobobimasiwe.pdfIn PDF document text
    • https://tazeviguso.weebly.com/uploads/1/3/4/3/134339516/woritomapuj.pdfIn PDF document text
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/7772900.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/maxoxekifuloxa.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/9c1a8770-7087-41c2-b93d-d1fc8d05967c/39631331051.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/mumawomijipoke.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/64471550923.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/83716796172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c8266a7-6dd1-49bc-b02e-ca0371243aa1/56509454809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5209/5898/files/lego_ninjago_shadow_of_ronin_mod_apk.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_off00009b0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B0C 5060 bytes
SHA-256: 18f9c6475d1d446283569ff2863ebe161d65c2bc94a4445869be39ff28f92f03
font_01_sfnt_off0000ac65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC65 11024 bytes
SHA-256: 88393fdb21ef7057acb648ef009179dc47f06397973942182d7da88606b714fd