Malicious PDF — malware analysis report

Static analysis result for SHA-256 713b765d57265622…

MALICIOUS

PDF

59.5 KB Created: 2020-08-03 21:48:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 332bcb76438a43baf47c9b2bd4cfb476 SHA-1: dee0e127ade8391a993ea4cad5bf52155d9efa87 SHA-256: 713b765d5726562283f86536e809163dda7ad08a0504dae11e7d2890a43a2847
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links designed to appear as a link farm, a common tactic for SEO poisoning and phishing. The primary redirector URL, 'https://ttraff.ru/pify?keyword=warhammer+40k+8th+edition+codex+pdf+free+download', is flagged as malicious and likely serves as a lure for users searching for specific content. The ML classifier strongly indicates maliciousness, supporting the observed redirection and link farm techniques.

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=warhammer+40k+8th+edition+codex+pdf+free+download In PDF document text
    • http://files.l1goalkeeper.com/uploads/1/3/1/1/131163718/sotipivupoludaj.pdfIn PDF document text
    • http://files.togetherincounselling.co.uk/uploads/1/3/1/4/131438899/7ef4e.pdfIn PDF document text
    • http://limoso.toplinepriority.com/uploads/1/3/2/3/132303238/galupogip.pdfIn PDF document text
    • http://files.tremontsports.com/uploads/1/3/1/6/131636728/wogubemuwimopaj-sekuzu.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/1/0438/1750/0834/files/48885770829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/76814547131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/xikapusapasemam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/81442953363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5329/2440/files/samsung_idcs_28d_administrator_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/dabevawefarikikumifaloz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6243/5739/files/putugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2639/0933/files/39449265390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7423/9129/files/wirejosasuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/zuperevidetoduzubukonug.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 3

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_off00009ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA3 5876 bytes
SHA-256: 0571a5d39b6eb22b2254f24ce368df94a33bb23ca90ed220df1b0ff91a28858d
font_01_sfnt_off0000b0a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0A4 15424 bytes
SHA-256: 677ab748a9ec0a7109fe2e7c1d5f5efd975f699f7a83cf6a36b00413ba2805c3

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