PDF static analysis report

Static analysis result for SHA-256 c4c028cb405ee948…

SUSPICIOUS

PDF

5.3 KB Created: 2015-06-03 05:24:23 Authoring application: HTML2FPDF >> http://html2fpdf.sf.net (via FPDF 1.52) First seen: 2015-07-16
MD5: 538f13c040dbfb9c79f47d0ca306e0c7 SHA-1: e2a8a2a70608ed3729fb14fb0668dc9f5deb2852 SHA-256: c4c028cb405ee9481b1a056cfd68bff3a93f1818574420721a7363047bf2f9fc
40 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF contains embedded JavaScript and multiple external URIs, many of which are related to pharmaceutical products. The document body also contains these URLs, suggesting a lure to direct the user to potentially malicious websites for phishing or malware delivery. The embedded JavaScript is a strong indicator of malicious intent, likely to exploit vulnerabilities or download further payloads.

Machine Learning

  • Nyx PDF Classifier clean score 0.0098

Heuristics 3

  • PDF carries a PHP-gateway SEO-spam PDF link farm medium PDF_SEO_PHP_GATEWAY_LINK_FARM
    PDF contains four or more clickable links whose target is a `.php` gateway with a multi-word search-PHRASE document slug embedded after it (e.g. 'index.php?.../binary+options+trading+nz.pdf' or 'pdf.php/cialis-dosage-side-effects.pdf'). Legitimate PHP-served documents use a filename or numeric id, not a search-query phrase, so this is the generated SEO link-farm shape — pharma / binary-options / 'free download' spam that ranks for queries and routes users into payload/redirect chains. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://logerenbijvlamingen.com/vendor/mailgun/mail/pdf.php/viagra-samples-cialis.pdf In PDF document text
    • http://www.plushaut.net/fckeditor/editor/js/pdf.php/original-cialis-online.pdfIn PDF document text
    • http://www.plushaut.net/fckeditor/editor/js/pdf.php/cialis-free-30-day-trial.pdfIn PDF document text
    • http://www.bim-cadd.com/clvkoiusakg-buy-generic-viagra-online-paypal/In PDF document text
    • http://www.plushaut.net/fckeditor/editor/js/pdf.php/generic-levitra-at-walmart.pdfIn PDF document text
    • http://www.plushaut.net/fckeditor/editor/js/pdf.php/viagra-cialis-comparison.pdfIn PDF document text
    • http://html2fpdf.sf.net)/CreationDateIn PDF document text
    • http://html2fpdf.sf.netIn PDF document text
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