Malicious PDF — malware analysis report

Static analysis result for SHA-256 af27234fda2e79ca…

MALICIOUS

PDF

44.6 KB Created: 2020-10-27 06:33:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 19961c93138fd3eea000628f269e3c9d SHA-1: 5dece53662fab2f3ecc7dbacaba8e3814c5cdb0a SHA-256: af27234fda2e79ca33c7b1fd52151a339d88921225bc9d58ad5f3228d1d634eb
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/strik?keyword=zorba+the+greek+book+pdf+download In PDF document text
    • https://zibeselev.weebly.com/uploads/1/3/4/1/134131471/mabazuturej_xafurupitar.pdfIn PDF document text
    • https://zotorakiv.weebly.com/uploads/1/3/0/7/130739478/8264358.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/6763278.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zuxadol/88464382951.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/approaches_to_problem_solving_in_psychology.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/60147355281.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba8ca74a-655b-4232-8739-fade8a4f92a9/eso_outfit_change_token.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9adf1f7e-9ec7-4a31-9243-fcc232109378/vacaciones_santillana_100_problemas_para_repasar_matematicas_2_primaria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f15f8c6-f1d0-4ae7-97c2-36ba6b3f49bc/22114250360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33738dda-60a0-4b01-8c91-d6f31c026cbf/98416183036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76316de5-32fc-48fb-b394-2846d58d2919/john_deere_l120_belt_diagram_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bc224c7-ea11-4959-8f69-b79d29ab11b3/79197488216.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74d19af3-cd1c-4167-95e6-cd538e6ebd47/vazakifexokedosakid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e253a48-23b8-4e39-abe2-bcc289a1ddc9/90521045670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8140/9713/files/area_and_volume_of_triangular_prism_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8810/1030/files/nunakunuvuwet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca41b347-7763-43b7-8e0b-f762a2cda5d3/56918864824.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91a34a1b-9b6f-4f3b-b083-63f68504a9b7/38618368486.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88fe1e78-b52c-42e9-a810-205defcb064b/19670514650.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bc98f12-029e-445a-b12a-7a2b50318fa9/39583787414.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_off00006f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F36 5376 bytes
SHA-256: 42258009a9ad64439a6a2b2c514493c744fb4351c5f900771840eb40e27bbbd5
font_01_sfnt_off00008194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8194 10332 bytes
SHA-256: 7b5b9c97087fdf1d5c53dad2b0f10f71f94df407cd33278dd277226dce3afbc7

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