PDF static analysis report

Static analysis result for SHA-256 0f4d4b88ee7be43c…

SUSPICIOUS

PDF

5.7 KB Created: 2015-06-04 11:20:24 Authoring application: HTML2FPDF >> http://html2fpdf.sf.net (via FPDF 1.52) First seen: 2015-07-16
MD5: 1d3adb82a979d22bd81ab5e5346acf83 SHA-1: b883731fc410001b766a2b2e46544b307fff48a3 SHA-256: 0f4d4b88ee7be43cf6f0a5415dd7f9c096c70c06375e4602975ff477123d0c06
40 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript that decodes URLs, and it is also identified as a link farm distributing SEO spam. The document body and extracted URLs promote pharmaceuticals like Viagra and Cialis, suggesting a phishing or spamming campaign. The embedded JavaScript likely serves to redirect users to these malicious or spammy links.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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://www.kanebuilders.com/real_estate/disney/pdf.php/viagra-prescribing-information.pdf In PDF document text
    • http://www.samfab.com/Scripts/js/pdf.php/can-prednisone-cause-muscle-spasms.pdfIn PDF document text
    • http://julieofcalifornia.com/Assets/images/Products/e.php/buy-viagra-cheap-no-prescription/Referenced by PDF JavaScript
    • http://www.samfab.com/Scripts/js/pdf.php/buy-single-viagra-pills.pdfIn PDF document text
    • http://www.samfab.com/Scripts/js/pdf.php/can-prednisone-cause-sleeplessness.pdfIn PDF document text
    • http://www.samfab.com/Scripts/js/pdf.php/best-generic-viagra.pdfIn PDF document text
    • http://www.samfab.com/Scripts/js/pdf.php/zyrexin-vs-viagra.pdfIn PDF document text
    • http://html2fpdf.sf.net)/CreationDateIn PDF document text
    • http://html2fpdf.sf.netIn PDF document text
🗂 Part of campaign: sf.net 56 samples

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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