Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf7a938ae113cd8b…

MALICIOUS

PDF

68.9 KB Created: 2020-08-16 18:29:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9230d3b2b1841c4f5f0b9470a6cc0716 SHA-1: 7e292cd789aafa7271c6be28f3ffd62ec257ce45 SHA-256: bf7a938ae113cd8b98087d2eddcd2a686a51254c126a2ba4cda153db421f6712
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to other PDF files hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=cetuximab+head+and+neck+cancer+guidelines', is identified as a malicious redirector. This suggests the document is designed to lure users into clicking malicious links, potentially leading to further compromise.

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=cetuximab+head+and+neck+cancer+guidelines In PDF document text
    • http://nutevi.alexandermakay.com/uploads/1/3/1/4/131453278/a754fab.pdfIn PDF document text
    • http://files.artofandrewchesworth.com/uploads/1/3/1/3/131398517/05f40b497198bf6.pdfIn PDF document text
    • http://nupisalok.gerdesgala.com/uploads/1/3/1/3/131398473/9640964.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/1/0432/8852/7013/files/41505435360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9997/1999/files/affidavit_of_marriage_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/59228645050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/71242887700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/perimetry_interpretation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3756/4838/files/deravutatojexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8523/4338/files/30024516852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9266/2688/files/38974193595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/fusionner_des_documents_gratuitement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/16833006225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3042/0384/files/konijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1682/0635/files/chemistry_matter_and_change_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9145/1294/files/vazarilekifidivizum.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 3

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_off0000ce49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE49 5528 bytes
SHA-256: f955a2d5f82d840ea809c4e43bd109b372b87cc5921b53fe504251223c3ebd88
font_01_sfnt_off0000e0e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E7 10944 bytes
SHA-256: 6aea0dcee667742373cd8313394ebdc3cc3dbfcea09f5dd371e1c149bebee816

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