Malicious PDF — malware analysis report

Static analysis result for SHA-256 af26d75aae5073e1…

MALICIOUS

PDF

41.9 KB Created: 2020-10-04 17:40:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 9f8d28b379cc2ec5a73f1e980152ef79 SHA-1: 1e66bc04ea43038614f8dd619df65e570de02ec7 SHA-256: af26d75aae5073e12414c138a8e0058da97175e61ef320c8942061a92b0df7c4
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/strik?keyword=ansioliticos+naturais+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6926/8383/files/worksheet_for_basic_stoichiometry_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/hale_koa_parking_office.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4353/2185/files/69695807626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2718/5315/files/meiosis_coloring_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0696/2075/files/zazebetiropatimobitevuvaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6198/8507/files/charles_city_schools_va.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/pocket_orthopaedics_evidence-based_survival_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0135/files/las_grutas_de_tolantongo_resort_price.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/ecosystem_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b305529e-6293-43cd-8b94-b967d182d58e/jotonabufiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fe3fb2a-0529-42f1-acce-78b1d101c778/3676612547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1682/1157/files/sacred_heart_school_yankton_sd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6597/4440/files/nalidivobero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4191/2997/files/12225924697.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_off000067c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C4 5140 bytes
SHA-256: 4e86cdfa99ae4c04e842e9857717762f86bbb2e78fee1849cb107b00980d8473
font_01_sfnt_off00007954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7954 9792 bytes
SHA-256: d019638d373d0153bdcf8acfdd0258e0b8b820055ebda2bf1c7c61f5580d7f41

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