Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd657de9f6f36f9f…

MALICIOUS

PDF

12.7 KB Created: 2015-07-15 14:42:04 +04:00 Authoring application: DOMPDF
MD5: 8aacf7ca75d0542c560fa37c2b8a17f6 SHA-1: e96a8b0e24699d24f39d1a54810d08d12f08927f SHA-256: bd657de9f6f36f9f750ae52bfc0f88e0e889b2f67ecd2ed4b7a3e057f1b10cce
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and contains a large number of embedded URLs. The heuristic 'PDF_SEO_LINK_FARM' indicates that the PDF is designed to link to numerous external websites, likely for SEO manipulation or to serve as a landing page for malicious content. No scripts were extracted, and the document body primarily consists of these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8742

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://photo-file.ru/index.php?article=1321.1&wehsa=1&pdf=1321
    • http://www.motz73.fr/index.php?article=1538.1&vrqcc=1&pdf=1538
    • http://techaccesscorp.com/index.php?article=1374.2&dupth=2&pdf=1374
    • http://photo-file.ru/index.php?article=364.1&wehsa=1&pdf=364
    • http://clockworkmovies.com/index.php?article=647.1&wgigr=1&pdf=647
    • http://photo-file.ru/index.php?article=2331.1&wehsa=1&pdf=2331
    • http://pathica.net/index.php?article=1943.1&ikbca=1&pdf=1943
    • http://www.mantrabeautybar.ca/index.php?article=124.1&rukbv=1&pdf=124
    • http://www.faceausoleil.com/index.php?article=1573.2&ipbvv=2&pdf=1573
    • http://photo-file.ru/index.php?article=2311.1&wehsa=1&pdf=2311
    • http://photo-file.ru/index.php?article=81.1&wehsa=1&pdf=81
    • http://photo-file.ru/index.php?article=205.1&wehsa=1&pdf=205
    • http://weterynarz-gdynia.pl/index.php?article=446.2&axpfr=2&pdf=446
    • http://photo-file.ru/index.php?article=703.1&wehsa=1&pdf=703
    • http://ve-klubber.dk/index.php?article=177.1&jzwgf=1&pdf=177
    • http://photo-file.ru/index.php?article=1158.1&wehsa=1&pdf=1158
    • http://www.ivanandpamela.com/index.php?article=321.1&tekgj=1&pdf=321