Malicious PDF — malware analysis report

Static analysis result for SHA-256 a72381e2dcaf8c11…

MALICIOUS

PDF

6.6 KB Created: 2015-06-04 18:30:34 +04:00 Authoring application: DOMPDF First seen: 2015-06-30
MD5: 88bdcb2917db82345a6ebf84227a3623 SHA-1: c09049dfe6fecb8e837825ebdad1dd6677c7fdf2 SHA-256: a72381e2dcaf8c1109abb6dacdf9e964bf5c0c3b7b8433b7ca7989fdc916aee0
62 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs that are all related to financial trading topics such as binary options and stock options. The ML classifier flagged this PDF as malicious, and the presence of these external links suggests a lure to a potentially malicious website. No scripts were extracted from this sample, limiting further analysis of its behavior.

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://supplementalsounds.com/index.php?wiki/04/06/2015/genesis/binary+options+hedging.pdf&acwco=2&news=1702 In PDF document text
    • http://4smokers.dk/index.php?wiki/04/06/2015/funnypictures/binaryoptionsdaily.com+forum.pdf&fdzwn=1&news=1013In PDF document text
    • http://www.mafiaracing.com/index.php?wiki/04/06/2015/marketleader/binary+signals.pdf&psgtl=3&news=1013In PDF document text
    • http://siegen-limos.de/index.php?wiki/04/06/2015/brandmerch/binary+broker+india.pdf&cwwpt=1&news=1646In PDF document text
    • http://www.lowestmedicareplans.com/index.php?wiki/04/06/2015/marriage/binary+code+options.pdf&hjnjz=1&news=1794In PDF document text
    • http://mottoagency.sg/index.php?wiki/04/06/2015/qreator/binary+option+strategies+qi.pdf&awxxu=1&news=2014In 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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