Malicious PDF — malware analysis report

Static analysis result for SHA-256 f81bf9361db40b10…

MALICIOUS

PDF

6.7 KB Created: 2015-06-04 18:30:21 +04:00 Authoring application: DOMPDF First seen: 2015-06-09
MD5: 78b95659a87607f1ba5bafb4da2b1c2a SHA-1: a5125a6ec82c273d30133a33326a9dfde3c34c50 SHA-256: f81bf9361db40b10e87622a205103c67d6af6c40de97c1847fd7bc0619ff667a
62 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, all related to binary options trading. The ML classifier flagged this PDF as malicious, and the document body reinforces the lure by discussing stock options and trading. The primary attack pattern involves directing users to potentially malicious websites through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5034

Heuristics 2

  • 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 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.productosherbal.es/index.php?wiki/04/06/2015/splendid/what+is+a+binary+options+account.pdf&nsoaw=1&news=1787 In PDF document text
    • http://www.vanwillegenconsult.nl/index.php?wiki/04/06/2015/themefuse/binary+options+easy.pdf&oxhqf=1&news=788In PDF document text
    • http://www.supplementalsounds.com/index.php?wiki/04/06/2015/bestunion/binary+trading+demo+free.pdf&elbtt=1&news=974In PDF document text
    • http://www.cullenseniorsolutions.com/index.php?wiki/04/06/2015/shelflife/$1+binary+options.pdf&sodkq=1&news=1831In PDF document text
    • http://canyoncoal.com/index.php?wiki/04/06/2015/serendibleisure/binary+option+application.pdf&tteow=1&news=2947In PDF document text
    • http://www.bluematters.be/index.php?wiki/04/06/2015/celebnetworth/binary+options+u+s+based.pdf&jjvup=1&news=1446In PDF document text
    • http://www.supermaraton.eu/index.php?wiki/04/06/2015/housepop/binaryoptionstradingguide.com.pdf&owutp=1&news=sitemapIn PDF document text

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