Malicious PDF — malware analysis report

Static analysis result for SHA-256 870a77675eab9b6e…

MALICIOUS

PDF

6.7 KB Created: 2015-06-04 18:31:05 +04:00 Authoring application: DOMPDF First seen: 2015-06-30
MD5: c29565f87f9feabef0249c3a46cd0a2d SHA-1: 5066c1e9370822f3fafd3c8fcdaad3fc228e2b22 SHA-256: 870a77675eab9b6ebbde9161d1f566691f4cbcfb7e52ece135abfb943f697ff3
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs that are part of a link farm, predominantly related to binary options trading. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the structure and embedded links suggest a campaign aimed at SEO manipulation or directing users to potentially malicious or scam-related websites.

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://www.vanwillegenconsult.nl/index.php?wiki/04/06/2015/themefuse/binary+options+easy.pdf&oxhqf=1&news=652 In PDF document text
    • http://www.fitbodyelite.com/index.php?wiki/04/06/2015/readersdigest/example+of+binary+option.pdf&ivrjx=1&news=50In PDF document text
    • http://selye.hu/index.php?wiki/04/06/2015/broadcast/binary+trade+canada.pdf&cbavp=1&news=1676In PDF document text
    • http://www.growlercreative.com/index.php?wiki/04/06/2015/ukmplus/binary+option+zip.pdf&fptxh=1&news=1159In PDF document text
    • http://chasingfiber.com/index.php?wiki/04/06/2015/vaicomtudo/binary+brokers+canada.pdf&bjydv=1&news=1332In PDF document text
    • http://4smokers.dk/index.php?wiki/04/06/2015/funnypictures/binaryoptionsdaily.com+forum.pdf&fdzwn=1&news=1119In 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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