Malicious PDF — malware analysis report

Static analysis result for SHA-256 f874cf0e802a5a97…

MALICIOUS

PDF

92.2 KB Created: 2022-01-17 11:42:40 Authoring application: Find The Missing Digit Multiplication Worksheet adstech (via FPDF 1.82) First seen: 2026-06-16
MD5: 3a758f1932c57d0e029b529962d63623 SHA-1: 14ee94593cf7a9c012feac2a1673299d65431be2 SHA-256: f874cf0e802a5a9724b87dd03c4a146d39265e5c1f52cfbe122f65f2736fe762
92 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0031

Heuristics 3

  • Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LURE
    PDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked URL.
  • PDF carries SEO doc-farm redirector links (/pdf/<domain>) medium PDF_SEO_DOC_REDIRECTOR_LINK_FARM
    PDF contains clickable redirector links whose path ends in a bare website domain behind a /pdf/ or /doc/ segment (e.g. 'host/Document-Title-Slug/pdf/target-site.tld'), paired across both variants and/or alongside links into WordPress form-plugin upload storage. This is the generated 'free document/template' SEO phishing family: scrambled filler text plus links that route searchers through a redirector into payload/redirect chains. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://citesdetails.site/Find-The-Missing-Digit-Multiplication-Worksheet/pdf/lindleyhiringsolutions.com In PDF document text
    • http://citesdetails.site/Find-The-Missing-Digit-Multiplication-Worksheet/doc/lindleyhiringsolutions.comIn PDF document text
    • https://lindleyhiringsolutions.com/wp-content/uploads/formidable/6/whats-another-word-for-writting-skill.pdfIn PDF document text
    • http://citesdetails.site/find-the-missing-digit-multiplication-worksheet/doc/lindleyhiringsolutions.comIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off00016691.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16691 76950 bytes
SHA-256: 43b13684882d332187dbe2691d5e4f64c33a98e381a4dc2316374ba1b923b47c

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