Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b48737082423ba7…

MALICIOUS

PDF

11.5 KB Created: 2015-07-15 14:37:34 +04:00 Authoring application: DOMPDF
MD5: e5bc4ac32eb12cda0c713cd94cd55bd3 SHA-1: 6a178dff2e98b94cf2a17bf978cd662f65f71124 SHA-256: 9b48737082423ba77a823e2a6e24d74ce66e945b53ab055eb656a7dda8772d05
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The document body contains text related to trading strategies, but the primary malicious activity appears to be the redirection to numerous external websites, likely for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8959

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=1124.1&wehsa=1&pdf=1124
    • http://information32.org/index.php?article=838.1&ugibr=1&pdf=838
    • http://archerwealth.com.au/index.php?article=822.1&ldzws=1&pdf=822
    • http://photo-file.ru/index.php?article=1870.1&wehsa=1&pdf=1870
    • http://vioval.eu/index.php?article=1400.1&irrir=1&pdf=1400
    • http://photo-file.ru/index.php?article=2099.1&wehsa=1&pdf=2099
    • http://TomOn.tv/index.php?article=472.1&oeyju=1&pdf=472
    • http://quraniarbi.com/index.php?article=2470.2&sbfeb=2&pdf=2470
    • http://lifesweetner.es/index.php?article=95.1&wddqo=1&pdf=95
    • http://photo-file.ru/index.php?article=2275.1&wehsa=1&pdf=2275
    • http://photo-file.ru/index.php?article=1182.1&wehsa=1&pdf=1182
    • http://photo-file.ru/index.php?article=1939.1&wehsa=1&pdf=1939
    • http://www.mantrabeautybar.ca/index.php?article=1428.1&rukbv=1&pdf=1428
    • http://photo-file.ru/index.php?article=798.1&wehsa=1&pdf=798
    • http://madejalook.com/index.php?article=1120.1&ynlkg=1&pdf=1120
    • http://photo-file.ru/index.php?article=1402.1&wehsa=1&pdf=1402
    • http://mudinside.it/index.php?article=1345.2&ozinn=2&pdf=1345

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