Malicious PDF — malware analysis report

Static analysis result for SHA-256 691ec15394b30868…

MALICIOUS

PDF

45.6 KB Created: 2020-08-22 10:06:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f423886b156db98ed52ed3cf3a5c22ae SHA-1: 10c920067681a92f1e5704d5a635693bb5b06039 SHA-256: 691ec15394b308686076d93f815c4db294178d7148956044396c23c506c28c23
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, identified as a redirector for SEO-based phishing. The document body, though heavily obfuscated, contains references to the malicious URL and several benign-looking Shopify URLs, likely part of a link farm to improve search engine ranking for malicious content. The primary malicious URL is ttraff.ru, which is flagged as a redirector.

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=meeting+agenda+format+word In PDF document text
    • http://files.keyvanpaydar.com/uploads/1/3/1/4/131407796/rosemupe_naramafololovuw.pdfIn PDF document text
    • http://files.coneycustom.co.uk/uploads/1/3/1/8/131856743/zelegu.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/1/0434/7183/1193/files/kopix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kosetomamevisired.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1239/6968/files/template_kendo_grid_column.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8073/files/79162027998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2464/5272/files/27478953241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/lagukajivos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0008/6175/files/stk_amplifier_circuits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/giwijematasetabuxir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8561/8583/files/bijek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0893/3540/files/wefarujokawixolep.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
🗂 Part of campaign: keyvanpaydar.com 4 samples

Related samples 1

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_off00007618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7618 5112 bytes
SHA-256: 2a27b78be770cecb603ce1000ec52e02e56d7eb4242cac4735e41895139e7582
font_01_sfnt_off00008780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8780 10024 bytes
SHA-256: 905194680e8efb686f9e57bba112490b8ab6a0859cb029235ab822e64d9619ec

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