Malicious PDF — malware analysis report

Static analysis result for SHA-256 0474c57bb218ee69…

MALICIOUS

PDF

46.9 KB Created: 2020-08-07 19:27:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb9d39517f799d780b6d762ec568d7be SHA-1: 827329b3276b3d180f3b9d2c8219f66fa6ca4e1e SHA-256: 0474c57bb218ee69aa4c8a161fd83cf6cac9a96d992ac98b6ddd5345f6b903e9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links designed to appear as legitimate PDF downloads, but they redirect to a malicious URL (ttraff.cc). The ML classifier strongly indicated maliciousness, and the PDF structure suggests a link farm for SEO manipulation, likely to phish users or distribute malware. The primary malicious IOC is the redirector URL used in the lure.

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=segmentos+de+la+arteria+carotida+interna+pdf In PDF document text
    • http://files.jasonsternfineart.com/uploads/1/3/1/3/131398497/jozewa.pdfIn PDF document text
    • http://files.crossofchristpetoskey.com/uploads/1/3/1/3/131380029/cdf5f73596aff72.pdfIn PDF document text
    • http://files.mmarshallchurch.com/uploads/1/3/1/3/131379894/zoberuverusoripameli.pdfIn PDF document text
    • http://files.eloquentlearning.com/uploads/1/3/1/3/131379382/1920566.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/1/0437/7313/2954/files/zozujexofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5703/7990/files/asme_journal_of_mechanical_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/83980240182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/57395841248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3607/2341/files/54869185027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6371/2671/files/tamureva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/497691616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/110310656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3974/4419/files/57890055265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6076/4576/files/tanugosupevawenonevaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/81711079658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9869/4049/files/18393477112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4551/7469/files/sexowofutobumuk.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 4

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_off00007290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7290 5580 bytes
SHA-256: 2790eeb38a9ca50c1e09de2bd32739146b3a5e2d5d2e88413d9bcf25fa4b12c4
font_01_sfnt_off00008578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8578 12400 bytes
SHA-256: d15489c3cd44569efb4436493d45e1bbccae828f1b4e2bb1619b61588fbe7e21

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