Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab73f132aa6b48bc…

MALICIOUS

PDF

6.6 KB Created: 2015-06-04 18:29:04 +04:00 Authoring application: DOMPDF First seen: 2015-06-09
MD5: d1ee6f2caa255f2ce8ba8c20b0fcb1d6 SHA-1: e221d67bdbe5b1221d09b738e1cd37096e4ca8ba SHA-256: ab73f132aa6b48bca14ce76ba1d60ad356ad25f6ac59f780dd8a9f7537c8dd21
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by an ML classifier and contains numerous embedded URLs, identified as a PHP-gateway SEO-spam link farm. The document body, though truncated, also contains these URLs and text related to financial trading, suggesting a lure to external sites. No scripts were extracted from this sample.

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://siegen-limos.de/index.php?wiki/04/06/2015/brandmerch/binary+broker+india.pdf&cwwpt=1&news=723 In PDF document text
    • http://4smokers.dk/index.php?wiki/04/06/2015/funnypictures/binaryoptionsdaily.com+forum.pdf&fdzwn=1&news=1949In PDF document text
    • http://orunmarine.com/index.php?wiki/04/06/2015/mundoindica/$10+binary+options.pdf&wxnjt=1&news=2638In PDF document text
    • http://www.safari.kiev.ua/index.php?wiki/04/06/2015/newsone/binary+options+593.pdf&hopcd=1&news=257In PDF document text
    • http://www.gopelion.com/index.php?wiki/04/06/2015/mataam/cfd+binary+options.pdf&iiktw=2&news=1117In PDF document text
    • http://viafoliar.cl/index.php?wiki/04/06/2015/drustan/binary+trading+tips+and+tricks.pdf&ytnox=1&news=505In 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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