Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0fd71e7412f3ab6…

MALICIOUS

PDF

53.6 KB Created: 2020-08-05 00:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26e1b910c215d769a3f760bba46df987 SHA-1: 48bb82892b8ef2d9e6102cb229fcd71a9849ed38 SHA-256: b0fd71e7412f3ab63d4ef4ddab9d47230bd3abc81dd4e2ba97fc544c1f983e06
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.ru, which is presented to the user as a "Game of Thrones books PDF". The PDF also contains a large number of links to other PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. The ML classifier strongly flagged this PDF as malicious.

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=game+of+thrones+livros+pdf In PDF document text
    • http://files.misswaynecounty.org/uploads/1/3/1/4/131406337/6cb3a2d5.pdfIn PDF document text
    • http://totud.zhangtours.com/uploads/1/3/1/4/131453494/5341818.pdfIn PDF document text
    • http://files.webfirethemes.com/uploads/1/3/1/4/131453869/d9c14596622a8.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/1/0438/4522/2557/files/volugapivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/bricks_intensive_reading_2_answer_key_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3755/files/82003406778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/joint_venture_accounting_entries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/50877824179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/76112197175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3224/7457/files/43886672698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4352/0666/files/40587449482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3862/files/2570886444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2715/9448/files/oxford_textbook_of_oncology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5129/4628/files/96200307183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5089/2440/files/wilizegubiruzarovuzuduzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3088/8103/files/administrao_estratgica_conceitos_wright.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 4

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_off000092d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D0 5372 bytes
SHA-256: 0a30dc4b6d335c8c0c165ebf4f4ceefb868c7394a3153a017de2893069432441
font_01_sfnt_off0000a4f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F7 10748 bytes
SHA-256: 4e7b1d771062543ea9dd634248fa51325441398bdb65c98064bfaf5f5ab1aeb4

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