Malicious PDF — malware analysis report

Static analysis result for SHA-256 62ea6af957eb84f5…

MALICIOUS

PDF

6.8 KB Created: 2015-06-04 18:31:16 +04:00 Authoring application: DOMPDF First seen: 2015-06-09
MD5: a8ee9edb4d88cc97334940bc505c5620 SHA-1: ea8b95bf63d802679e994e5e96b4964f3ec2f312 SHA-256: 62ea6af957eb84f59f9c8e42122870ef265068a33dfe628274d7d68a48083b73
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs that point to websites designed for SEO spam, specifically promoting binary options trading. The heuristic 'PDF_SEO_PHP_GATEWAY_LINK_FARM' confirms this behavior, indicating the document's primary purpose is to drive traffic to these external sites. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine further malicious intent beyond link farming.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5040

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://ibizatraining.es/index.php?wiki/04/06/2015/planaltina/binary+option+us.pdf&jansi=1&news=1800 In PDF document text
    • http://nicholasburgess.com/index.php?wiki/04/06/2015/youraveragego/1+minute+binary+option+strategy.pdf&rospy=2&news=14In PDF document text
    • http://www.arawakhotelstcroix.com/index.php?wiki/04/06/2015/newstime/what+is+a+binary+options+trading+system.pdf&jduqg=3&news=1154In PDF document text
    • http://landstar.kz/index.php?wiki/04/06/2015/metrolic/binary+options+fraud.pdf&inxpd=1&news=1062In PDF document text
    • http://www.vanwillegenconsult.nl/index.php?wiki/04/06/2015/themefuse/binary+options+easy.pdf&oxhqf=1&news=934In PDF document text
    • http://medicareplansusa.com/index.php?wiki/04/06/2015/enetspark/binary+options+20+minimum+deposit.pdf&chnqc=1&news=837In 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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