Malicious PDF — malware analysis report

Static analysis result for SHA-256 59b632d291609075…

MALICIOUS

PDF

44.8 KB Created: 2020-08-25 17:28:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 163e853409ede69b0cf0658e4fcd9c5f SHA-1: 33aa28e4cf27be135b5e2b5af80f7723ceb816c3 SHA-256: 59b632d2916090756e42c9e1e1814e65a96e6ff7c65ea01cab7a7e9c84ebae99
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure for an 'Android 9.0 update zip file'. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO for 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.com/pify?keyword=android+9.+0+update+zip+file In PDF document text
    • http://mevotu.happyhealthyyoga.co.uk/uploads/1/3/0/7/130776445/medozuzat_midula_nawuvibawotarig.pdfIn PDF document text
    • http://files.thebookkeepersmd.com/uploads/1/3/2/6/132682989/daruwilixamob.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/1/0432/0080/7070/files/81870375567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4641/1167/files/31256658207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8220/2782/files/59543517772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/asterix_obelix_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9157/files/99785254082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2679/0053/files/33395134442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/totopajivumipedizibusik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55628578329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3997/1738/files/ti_sao_file_khng_c_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2526/7877/files/67559811322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4757/4949/files/rupinder_gandhi_original_photos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9005/8152/files/jegijaz.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: happyhealthyyoga.co.uk 4 samples

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_off0000708c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x708C 5228 bytes
SHA-256: 889f5caf417ac5ba1924a680e7ebec87edcf50d4383374663ba7b3e083adf96d
font_01_sfnt_off0000826b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x826B 11132 bytes
SHA-256: 677d464f716fc68fc56944daafa20a9d1383da62473d28d6935ff1aa55841357

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