Malicious PDF — malware analysis report

Static analysis result for SHA-256 50be4b113107e883…

MALICIOUS

PDF

12.5 KB Created: 2015-07-15 14:37:09 +04:00 Authoring application: DOMPDF
MD5: ebdcebe3ba3aa27d8e147ef845fcfc24 SHA-1: 6ab3732901bf407a12c933e435298d78d551e86c SHA-256: 50be4b113107e883283a84eec9201941a657eee409eb5df9c02c66854d9175f8
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 significant number of external links, characteristic of a link farm. The embedded URLs are likely used to direct users to malicious websites, potentially for SEO manipulation or to serve further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8835

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=450.1&wehsa=1&pdf=450
    • http://propertarian.net/index.php?article=1122.1&jdxyr=1&pdf=1122
    • http://dhyansuman.com/index.php?article=216.8&xvanh=8&pdf=216
    • http://photo-file.ru/index.php?article=1475.1&wehsa=1&pdf=1475
    • http://casarosso.com.tr/index.php?article=1121.1&gdggi=1&pdf=1121
    • http://photo-file.ru/index.php?article=938.1&wehsa=1&pdf=938
    • http://www.mantrabeautybar.ca/index.php?article=2198.1&rukbv=1&pdf=2198
    • http://ura-sandoz.com/index.php?article=124.1&nydkb=1&pdf=124
    • http://londonfilmandcomiccon.net/index.php?article=894.2&ybtwx=2&pdf=894
    • http://photo-file.ru/index.php?article=1711.1&wehsa=1&pdf=1711
    • http://photo-file.ru/index.php?article=1738.1&wehsa=1&pdf=1738
    • http://photo-file.ru/index.php?article=797.1&wehsa=1&pdf=797
    • http://gonencelik.com.tr/index.php?article=1873.1&aosqe=1&pdf=1873
    • http://photo-file.ru/index.php?article=2367.1&wehsa=1&pdf=2367
    • http://www.authenticness.com/index.php?article=841.1&aqdto=1&pdf=841
    • http://photo-file.ru/index.php?article=1682.1&wehsa=1&pdf=1682
    • http://www.myrlimo.com/index.php?article=1032.1&sqfkb=1&pdf=1032

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