Malicious PDF — malware analysis report

Static analysis result for SHA-256 af20364a297b07b0…

MALICIOUS

PDF

34.0 KB Created: 2020-11-01 01:53:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 216fed810d06004c8b22113d0eba256e SHA-1: cf39998f6c710b76964de61f17d40cb824d78a7b SHA-256: af20364a297b07b06edc788d13290a2268b419b0eff0a9c46911147a96cc748e
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=how%20to%20reset%20sinotec%20tv%20manual In PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/994144.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379229/normal_5f93a12fe3e12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387421/normal_5f8ce0fa8b8d1.pdfIn PDF document text
    • https://zidabowejixu.weebly.com/uploads/1/3/1/1/131163559/8678239.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://s3.amazonaws.com/jupevuxirapi/nike_corporate_strategy_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6246/8514/files/69542674532.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/zosemipub.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/origen_del_dia_del_amor_y_la_amistad.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/adobe_reader_download_windows_8.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/aripiprazole_mechanism_of_action.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/biblical_meaning_of_faith.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f6422b3-764d-44f2-a538-ffd0c686ea1f/12853588728.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_off00003ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3EBF 4940 bytes
SHA-256: 1442c84cfc7f4169c7bca8a5cf5e09c6705ee7ba59d07d79f89a749e8467134d
font_01_sfnt_off00004f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F7B 8732 bytes
SHA-256: 28f4fcacc6f436988fb899a5c0e9e553d84a881ff15b7e63f40fea5f3a59ea8c
font_02_sfnt_off00006d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D23 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71