Malicious PDF — malware analysis report

Static analysis result for SHA-256 75c20659b8100278…

MALICIOUS

PDF

42.6 KB Created: 2020-09-17 14:55:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b29d8e0f40979700b9e301d1213088d7 SHA-1: 3843c7f5857db412c1a86eaa64aed3130e4a3c3e SHA-256: 75c20659b81002783bf76fffd1d070b040aaf8635b8140f61847e4268c2a9b76
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous embedded links designed to lead users to SEO spam and redirector sites, masquerading as academic content. The primary redirector URL is https://ttraff.club/wix?keyword=algebra+1+cc+midterm+review+answers, which likely serves as a gateway to further malicious content. The ML classifier strongly indicated maliciousness, and the presence of multiple PDF links to external sites reinforces the SEO link farm and redirector pattern.

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.club/wix?keyword=algebra+1+cc+midterm+review+answers In PDF document text
    • http://files.ellislakeresort.com/uploads/1/3/1/8/131857193/c83411.pdfIn PDF document text
    • http://lubimexe.bearstales.com/uploads/1/3/0/8/130874379/navilofunu_guwozolomux_zifadaret_bupiroxano.pdfIn PDF document text
    • http://files.barryswoodworks.com/uploads/1/3/1/8/131856852/zegozaxes.pdfIn PDF document text
    • http://lelok.shawsblindsfairburn.co.uk/uploads/1/3/0/8/130814340/jepiw_gamilom_wexotazerimula_vemizozazepaga.pdfIn PDF document text
    • http://files.bareandpolished.com/uploads/1/3/1/1/131163898/2144714.pdfIn PDF document text
    • http://muwaro.cmmlibrary.com/uploads/1/3/1/1/131163725/1fc8eb08cd23.pdfIn PDF document text
    • http://fowibu.bilgeceingilizce.net/uploads/1/3/1/4/131407802/dogalipabob_zeteveri.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/1/0430/7766/4929/files/angularjs_service_vs_factory_performance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7573/1607/files/fallout_shelter_wasteland_survival_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2358/7736/files/sulisutetunupup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/wufuseguwas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1174/3639/files/lottery_number_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0151/2095/files/pdf_to_word_converter_online_free_for_mac.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 8

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_off00006584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6584 5592 bytes
SHA-256: f24432d54484f70b771a0f69f5eb22a5ce12614e9dbb0feaae6b0a8c864dffd5
font_01_sfnt_off00007889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7889 10940 bytes
SHA-256: fa59a36563469458525f4a8b92995ce9c845fd5b21c0d34f912a5b4b384172d2

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