Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8dc13d34fc514b9…

MALICIOUS

PDF

62.1 KB Created: 2020-07-27 02:45:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e06fbba8fb410d9e367219e55f76ffbc SHA-1: 539fbd5d522b0151ff8168d382cf9a7583e21f63 SHA-256: a8dc13d34fc514b9a83b006af819d6e0a97c4ab8bd626496f91e6cc5f5858db1
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 a link farm hosted on Shopify, which ultimately redirects to a malicious URL (ttraff.cc). This indicates a phishing or scam attempt designed to redirect users to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF.

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=dr+bernstein+diet+meal+plan+pdf In PDF document text
    • http://files.empathyweek.com/uploads/1/3/0/8/130873804/8e7dbe106e9.pdfIn PDF document text
    • http://files.magicalmoves.com.au/uploads/1/3/0/7/130740183/2a8dab57cf98958.pdfIn PDF document text
    • http://files.moniquekgaffney.com/uploads/1/3/0/8/130813860/c6a16.pdfIn PDF document text
    • http://files.performaxbunbury.com/uploads/1/3/0/7/130739712/4733584.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/1/0434/5095/7974/files/fomotisefixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/zubosovowifepixijowosiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6275/3445/files/7488969544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9793/9361/files/38482580259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8524/1256/files/kewogoguruzebumeboxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4597/6221/files/gunivaluvenenujafuxalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/46198640653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/guwumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/lulusadizogoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13879903487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4575/6833/files/16262664139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8520/9512/files/dukofomesop.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 6

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_off0000b595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB595 5004 bytes
SHA-256: 4e0216ef3bd1dffe2035b0ac658a5201fd8a3493602402c3c6d76c3e9bc2a037
font_01_sfnt_off0000c66b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC66B 10668 bytes
SHA-256: e336ab2c910f93cf7bd14716aff2c4f35f21ba85aacc4bba613844fc802163a7

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