Malicious PDF — malware analysis report

Static analysis result for SHA-256 672cf31afa2f4a69…

MALICIOUS

PDF

38.6 KB Created: 2020-08-12 13:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fb1f6337f77d2b6435e496c3f65b5aec SHA-1: ea06cfa9b268b588db62e73be289af26d576eaec SHA-256: 672cf31afa2f4a6906fb441ab63217c24c05280e671a5eba19330af9f40c7df0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links designed to appear as legitimate documents but redirect to malicious infrastructure. The primary redirector URL is https://ttraff.ru/wb?keyword=fundy%20national%20park%20map%20pdf, which is flagged as malicious. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDF files, suggesting a link farm or SEO poisoning tactic to lure victims. The ML classifier strongly indicates maliciousness.

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=fundy%20national%20park%20map%20pdf In PDF document text
    • http://files.rentatent-sw.co.uk/uploads/1/3/1/8/131856039/wutajagibewu-zaxago-fafukozijive.pdfIn PDF document text
    • http://files.thousandhillsstables.com/uploads/1/3/1/4/131483184/gubasut.pdfIn PDF document text
    • http://files.hrv4training.com/uploads/1/3/0/9/130969148/romumib-roxoxikubu-fazumevaxuzi-fovebuzob.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/1/0429/5314/6517/files/lamud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/guzoteminerox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7090/5750/files/70764724934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9929/0776/files/selodutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0081/6028/files/ooga_chaka_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1254/6975/files/xarusenododu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2693/1099/files/58967195994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9730/0885/files/beaucoup_de_bruit_pour_rien_william_shakespeare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9221/files/cours_anglais_francais_traduction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/athlean_x_total_beaxst.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6305/8340/files/chemistry_student_textbook_grade_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8110/9405/files/libro_los_4_acuerdos_toltecas.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 8

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_off0000597c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x597C 5128 bytes
SHA-256: ed2800ce25312c06079adf588d781f10a11b6e5660497ca9d05bd29d8d773e87
font_01_sfnt_off00006ae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE9 10128 bytes
SHA-256: 3cf18ad1e37d0640dbcba0db3887a5e23dce2d4317cd28be27b6f9312c15ee39

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