Malicious PDF — malware analysis report

Static analysis result for SHA-256 4772b9a06e31a0f0…

MALICIOUS

PDF

53.7 KB Created: 2020-08-12 07:31:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e551faad0d3340e6627df475e92b6381 SHA-1: 0b9e85720ebd686f2924c7f55bd00520de941239 SHA-256: 4772b9a06e31a0f08f5e69729cbec3192938fb2ba62caa63cf834369fe900911
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains but ultimately redirect to a malicious URL on 'ttraff.ru'. This indicates a link farm or redirection attack designed to obfuscate the final malicious destination. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a malicious redirection scheme.

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=antigeno+prostatico+especifico+valores+pdf In PDF document text
    • http://files.samwattfitness.com/uploads/1/3/0/8/130813546/3827992.pdfIn PDF document text
    • http://dapukon.macroleaders.com.au/uploads/1/3/2/8/132814930/3987192a4cb13b8.pdfIn PDF document text
    • http://nilumaf.macleanhighschoolcareers.com/uploads/1/3/0/7/130740510/tefeligo.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/1/0433/3859/6511/files/14191635004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/beloromawodosuxaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/kimivipupivafuwarupubuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/kagolosoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4276/7001/files/descargar_biblia_thompson_reina_valera_1960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3563/1514/files/73217152606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8550/files/zoranawevovupabesugik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/43602495737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6170/5888/files/91165161126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2420/3424/files/bexisokudewez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2490/0515/files/55104432023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/water_pollution_effects_and_causes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/quikrete_walkway_molds.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_off00008ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED6 5372 bytes
SHA-256: 06d7eb156d281e38c62cd216f7f09471052e0d88e1733f0dd4d9cac445acc729
font_01_sfnt_off0000a12e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA12E 12100 bytes
SHA-256: 41c0b2271c9338c1639bf460226537367b1a49ecb3dca9cb858d9c251f418ba1

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