Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c601249dfe9cd9d…

MALICIOUS

PDF

6.7 KB Created: 2015-06-04 18:30:22 +04:00 Authoring application: DOMPDF First seen: 2015-06-30
MD5: ffaf4e5d285ea6869ca18d1841209862 SHA-1: 711ef9784d75921fe2b589a2dd8993caef54bbf3 SHA-256: 4c601249dfe9cd9dd57de1ae4acf13259b1ac4bcd53a2faf442a548f38c7bdce
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF document contains numerous embedded URLs, all of which point to domains related to binary options trading. The ML classifier also flagged this PDF as malicious. The document body text, though partially corrupted, also contains references to stock options and binary trading, reinforcing the lure. No scripts were extracted, but the primary attack vector appears to be social engineering via enticing links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5034

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://oilflux.com/index.php?wiki/04/06/2015/digidroid/binaryoptions.net.au.pdf&kclnt=8&news=2024 PDF link annotation
    • http://ozsoyenerji.com/index.php?wiki/04/06/2015/shredoptics/binary+trading+canada.pdf&laeen=1&news=1734In PDF document text
    • http://www.plzenska-knihvazba.cz/index.php?wiki/04/06/2015/newsley/binary+option+handel.pdf&oljvs=2&news=944In PDF document text
    • http://www.zsbawi.ch/index.php?wiki/04/06/2015/enormoz/binary+options+magnet.pdf&wzxxc=5&news=423In PDF document text
    • http://orunmarine.com/index.php?wiki/04/06/2015/mundoindica/$10+binary+options.pdf&wxnjt=1&news=1104In PDF document text
    • http://medicareplansusa.com/index.php?wiki/04/06/2015/enetspark/binary+options+20+minimum+deposit.pdf&chnqc=1&news=1647In 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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