Malicious PDF — malware analysis report

Static analysis result for SHA-256 86b93c0ab123dc3b…

MALICIOUS

PDF

39.3 KB Created: 2020-08-13 07:13:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 667a7a32fc682cb0495af7b823c73229 SHA-1: 9184a2d53173f48a4a41adbe15edcae7e2bcf679 SHA-256: 86b93c0ab123dc3bb4a75fa9a6d6a96372ad3ee510015ccb433915779f543c74
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, which is indicative of a link farm or phishing lure. The primary redirector URL is https://ttraff.ru/wb?keyword=badminton%20footwork%20pdf, which likely leads to a malicious site. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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/wb?keyword=badminton%20footwork%20pdf In PDF document text
    • http://files.glenvarbaptist.com/uploads/1/3/0/7/130776065/3810422.pdfIn PDF document text
    • http://files.dysartgoodsco.com/uploads/1/3/0/7/130775299/guves.pdfIn PDF document text
    • http://files.ismsiliconvalley.org/uploads/1/3/2/6/132695302/vigomunitexevogod.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/1/0433/7447/7473/files/gupegegifejugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/731691547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/vusifivopedugusumafero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8080/0674/files/27180016324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/public_finance_n5_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8618/3576/files/one_week_at_flumpty_s.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3480/3352/files/86901717111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/63805163313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3507/4465/files/34489701831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3434/5625/files/short_biography_of_albert_einstein.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4619/7653/files/90049848787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/ryobi_gas_weed_eaters.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 7

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_off00005cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB3 5184 bytes
SHA-256: 073678288649d2223fcdd51de8f0b30bce7a1504b41fbdc23f4a8f5c672f7c5e
font_01_sfnt_off00006e56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E56 10068 bytes
SHA-256: e540adb89b5e8818732174192496afae906a5fc1361c328d25fb764e75286ccc

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