Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c33a2c31645dba…

MALICIOUS

PDF

6.6 KB Created: 2015-06-04 18:30:47 +04:00 Authoring application: DOMPDF First seen: 2015-06-09
MD5: 9975dfa5f0368770ef801ec604c3681b SHA-1: 62108ad75f59e1f6280e1ce33d2127b550e1ea34 SHA-256: 07c33a2c31645dba18a8aadeb0a7b9d6fb01d2ab0b78f3aea1f45aa08de196a8
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that point to SEO spam websites, as indicated by the 'PDF_SEO_PHP_GATEWAY_LINK_FARM' heuristic. The document body, while truncated, also contains references to binary options and stock options, suggesting a lure to attract users interested in these topics. The ML classifier also flagged the PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5564

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://vintanesia.com/index.php?wiki/04/06/2015/storefronttt/binary+options+777.pdf&npqdc=1&news=316 In PDF document text
    • http://www.pumpskins.com/index.php?wiki/04/06/2015/yamidootest/binary+option+system.pdf&tqfod=1&news=900In PDF document text
    • http://studio89.fr/index.php?wiki/04/06/2015/simplepress/ubinary+broker+review.pdf&kfiny=2&news=1587In PDF document text
    • http://supplementalsounds.com/index.php?wiki/04/06/2015/genesis/binary+options+hedging.pdf&acwco=2&news=1482In PDF document text
    • http://controlsoft.com.br/index.php?wiki/04/06/2015/mandulaliget/binary+options+on+optionsxpress.pdf&txlqs=1&news=600In PDF document text
    • http://viafoliar.cl/index.php?wiki/04/06/2015/drustan/binary+trading+tips+and+tricks.pdf&ytnox=1&news=166In 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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