Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f3a8faf28a7ebfb…

MALICIOUS

PDF

46.4 KB Created: 2020-08-07 02:12:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02d7eda7045ac3de5e3709d2b3378c2f SHA-1: 50c281382d977da663b123f462b69c9f2f212759 SHA-256: 5f3a8faf28a7ebfbc5b995f9465bd92bd3c5e609a2eaff19fcdd0e1f875bc4f0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) and a large number of other PDFs hosted on Shopify, suggesting a link farm or phishing campaign. The ML classifier strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings for malicious redirectors and link farms point towards an attempt to drive users to malicious sites, likely for credential harvesting or malware delivery.

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=business+communication+notes+pdf+bba In PDF document text
    • http://gerob.mortgageinsuranceontario.ca/uploads/1/3/1/4/131453329/fed3a7bd1.pdfIn PDF document text
    • http://zesirajaf.lenserotica.com/uploads/1/3/1/8/131857334/971669.pdfIn PDF document text
    • http://files.thebigfootstudio.com/uploads/1/3/2/6/132681767/gameku.pdfIn PDF document text
    • http://files.craigleacapetown.com/uploads/1/3/1/4/131453005/5748444.pdfIn PDF document text
    • http://files.hartjames.com/uploads/1/3/1/3/131381607/pibovutov_likoritu.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/1/0428/9835/8432/files/vukabisozudetilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9305/6933/files/zetasodes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/23246546190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2530/9604/files/basigiravetavet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/english_phonotactics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/21747891720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/42032884080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1695/3751/files/39749406742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4208/5783/files/mobosepafurajinazaratiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9710/2238/files/centrifugal_pump_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/bidituxodisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/howard_bandy.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_off00007207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7207 5364 bytes
SHA-256: e681405bbb5926cb40bdf709b392cab223566fe26bba9eb1607215e60d21fb36
font_01_sfnt_off00008437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8437 12756 bytes
SHA-256: dcb9cf6ab032d1eede04a04ee3fbd9d2333db02c23237532cdb75711e6dd5663

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