Malicious PDF — malware analysis report

Static analysis result for SHA-256 21d3cd52922489c9…

MALICIOUS

PDF

7.1 KB Created: 2015-06-04 18:30:13 +04:00 Authoring application: DOMPDF First seen: 2015-06-09
MD5: 143d06ed43f0ca1721332c94ef6a46bf SHA-1: 38dd17e997ca4cc88ec590c4bccf8b4384bb64ab SHA-256: 21d3cd52922489c901e9ec1482ab39a06986ebcb36286cdf7c1d48cdbfa5c09c
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs, all related to binary options trading. The ML classifier flagged this PDF as malicious, and the presence of these links suggests a lure to a phishing or scam website. No scripts were extracted from this sample, limiting further analysis of its behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6281

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.recruitify.se/index.php?wiki/04/06/2015/heritagecc/binary+option+no+minimum+deposit.pdf&ogfda=1&news=2032 In PDF document text
    • http://www.skillmadeiras.com.br/index.php?wiki/04/06/2015/crytix/u.s.+binary+options.pdf&pbqku=1&news=621In PDF document text
    • http://www.cullenseniorsolutions.com/index.php?wiki/04/06/2015/shelflife/$1+binary+options.pdf&sodkq=1&news=1354In PDF document text
    • http://itpromo.be/index.php?wiki/04/06/2015/resurrect/binary+options+is+it+real.pdf&gjcph=1&news=1735In PDF document text
    • http://www.productosherbal.es/index.php?wiki/04/06/2015/splendid/what+is+a+binary+options+account.pdf&nsoaw=1&news=2724In PDF document text
    • http://www.narcisoevenere.com/index.php?wiki/04/06/2015/supportpress/synthetic+binary+option.pdf&lszpa=1&news=536In 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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