Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eba83f1b1764676…

MALICIOUS

PDF

43.3 KB Created: 2020-08-05 14:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7e502f62f196152162e868978dd5c1d SHA-1: 0b75ede1a8dae7e28060d3363caa7906c326b196 SHA-256: 5eba83f1b1764676b01aa05f8781669c36cfc6e399a0da6b7e4b8ef58e9b10c7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a redirector service known for distributing malicious content. The primary redirector URL, https://ttraff.ru/pify?keyword=dom+angielski+%25C4%2587wiczenia+dla+dzieci+pdf, is flagged as malicious. The document's structure suggests it is part of an SEO link farm designed to lure users with seemingly legitimate content, ultimately leading them to potentially harmful sites.

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.ru/pify?keyword=dom+angielski+%25C4%2587wiczenia+dla+dzieci+pdf In PDF document text
    • http://files.mywisdomboard.com/uploads/1/3/2/6/132695575/625417.pdfIn PDF document text
    • http://files.vivafitnessshepperton.co.uk/uploads/1/3/2/7/132740593/5a7d8fa8c5.pdfIn PDF document text
    • http://files.sheperforms.com/uploads/1/3/1/3/131381518/pukokefil.pdfIn PDF document text
    • http://files.mistressakella.com/uploads/1/3/1/6/131606275/wanugomojupobiz-xufedalosopas-dawowoma-nubakuxaj.pdfIn 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/1/0429/6287/8618/files/11416990884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1471/6572/files/wakorexujabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/funutojukogobalefobakeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7285/5957/files/font_weight_bold.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/l_appareil_genital_feminin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/zedinenilime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85755015361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0722/1661/files/doodle_god_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25843483079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3240/4380/files/50848710074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/62559454566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4836/2399/files/wenetize.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6590 5720 bytes
SHA-256: 2bee77eee1d2782f7a154501aab9fba8acd1e94eb855d3c1b19387179f4134e9
font_01_sfnt_off000078e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78E2 11892 bytes
SHA-256: 4f476fd8fa3646ac8792ae91b0fa5e25ce3c2fd24cf773240ca95d7590812859

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