Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee9f4475d5b8bc2…

MALICIOUS

PDF

12.3 KB Created: 2015-07-15 16:26:29 +04:00 Authoring application: DOMPDF
MD5: 8b00c049b9688803e5043c9d51a44579 SHA-1: 3af466d3f529f7c5f0781126f9cda9969729db47 SHA-256: cee9f4475d5b8bc28f2d90e5998f2e7c3f12a2a47d2df68f9bbb69da2e244c22
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, indicating a link farm designed to direct users to various external websites. This is supported by the 'PDF_SEO_LINK_FARM' heuristic firing. The ML classifier also flagged the PDF as malicious. No scripts were extracted, and the document body is heavily obfuscated, but the primary attack pattern appears to be SEO-based redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8883

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://chavagnes.com/index.php?article=1723.2&urwbo=2&pdf=1723
    • http://satarahealthcare.com/index.php?article=1948.1&tpoox=1&pdf=1948
    • http://weterynarz-gdynia.pl/index.php?article=329.2&axpfr=2&pdf=329
    • http://chavagnes.com/index.php?article=1446.2&urwbo=2&pdf=1446
    • http://www.lole.cl/index.php?article=1438.1&fadfz=1&pdf=1438
    • http://chavagnes.com/index.php?article=155.2&urwbo=2&pdf=155
    • http://intelluride.co/index.php?article=359.1&gdfls=1&pdf=359
    • http://kredite-fuer-arbeitslose.net/index.php?article=1949.1&jhins=1&pdf=1949
    • http://power-team.cz/index.php?article=2381.3&uwbuc=3&pdf=2381
    • http://chavagnes.com/index.php?article=462.2&urwbo=2&pdf=462
    • http://chavagnes.com/index.php?article=1518.2&urwbo=2&pdf=1518
    • http://chavagnes.com/index.php?article=2355.2&urwbo=2&pdf=2355
    • http://www.kingdomfaithchurch.org/index.php?article=585.1&fksac=1&pdf=585
    • http://chavagnes.com/index.php?article=1188.2&urwbo=2&pdf=1188
    • http://gchrismanelectric.com/index.php?article=175.1&txuhv=1&pdf=175
    • http://chavagnes.com/index.php?article=2244.2&urwbo=2&pdf=2244
    • http://www.mantrabeautybar.ca/index.php?article=2493.1&rukbv=1&pdf=2493

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