Malicious PDF — malware analysis report

Static analysis result for SHA-256 26bf378deeb46081…

MALICIOUS

PDF

45.9 KB Created: 2020-08-04 18:47:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea88b60887f72668c24017f14a9a01cc SHA-1: ec9b68699c003f7bf0df2d5916c99308a7462cdf SHA-256: 26bf378deeb46081defda2eaaacbf988d1170cfc4220020280752ad6a3051591
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify-hosted PDF files, indicating a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting a potential distribution vector for further 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.cc/pify?keyword=livros+sobre+o+candombl%25C3%25A9+pdf In PDF document text
    • http://files.padfieldvillage.co.uk/uploads/1/3/1/4/131453034/da52e3c67175.pdfIn PDF document text
    • http://files.mckerrinkellydirector.com/uploads/1/3/1/0/131071082/latopoje.pdfIn PDF document text
    • http://files.spaldinghighchorus.org/uploads/1/3/1/4/131408415/jebup.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/1/0431/1062/9532/files/navixepokexumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/44069708013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9948/8410/files/43924197623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3672/8735/files/take_back_the_night_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/aprenda_a_desenhar_linha_clara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/9311376773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/59090516540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/matam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0467/3699/files/97238727154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6789/0069/files/zunemipapajemowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7333/4424/files/vline_train_timetable_ballarat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/41149805913.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 2

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_off00006e10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E10 5584 bytes
SHA-256: c56894dfb3843173fc8c7503ec70e7c7629d87167e75d2d6660a81c044c25707
font_01_sfnt_off000080b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B5 13092 bytes
SHA-256: c6e47b7dfdd932581a50c24f6f2a6aaafe9d755f0eccaebb8575eb3ef1043464

Open this report in the interactive analyzer, or submit your own file for analysis.