Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcd5fd51944dd2c8…

MALICIOUS

PDF

12.5 KB Created: 2015-07-15 16:25:04 +04:00 Authoring application: DOMPDF
MD5: ab90ce4445108b879fea627bc28ef8d0 SHA-1: c51effa61b86d9c9b3db8481e20a5f6f6d46b72d SHA-256: bcd5fd51944dd2c80e96fb96ce39848891135a0c9de07a5b2a6f8837f5dfa559
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains a large number of external links, indicating a link farm or redirection strategy. The embedded URLs are likely used to distribute malware or phish for credentials. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

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://chavagnes.com/index.php?article=2133.2&urwbo=2&pdf=2133
    • http://londonfilmandcomiccon.net/index.php?article=2005.2&ybtwx=2&pdf=2005
    • http://casarosso.com.tr/index.php?article=1717.1&gdggi=1&pdf=1717
    • http://chavagnes.com/index.php?article=2402.2&urwbo=2&pdf=2402
    • http://massiv-holz-moebel.de/index.php?article=776.1&onxqu=1&pdf=776
    • http://chavagnes.com/index.php?article=2439.2&urwbo=2&pdf=2439
    • http://lektoring.eu/index.php?article=788.1&zsaop=1&pdf=788
    • http://epremier.ro/index.php?article=1046.1&ivdfx=1&pdf=1046
    • http://fotosalon-zoom.ru/index.php?article=1743.4&sufyu=4&pdf=1743
    • http://chavagnes.com/index.php?article=462.2&urwbo=2&pdf=462
    • http://chavagnes.com/index.php?article=521.2&urwbo=2&pdf=521
    • http://chavagnes.com/index.php?article=275.2&urwbo=2&pdf=275
    • http://krummenacher-haustechnik.ch/index.php?article=1599.1&ptfan=1&pdf=1599
    • http://chavagnes.com/index.php?article=1658.2&urwbo=2&pdf=1658
    • http://serviferias.org/index.php?article=900.2&daalr=2&pdf=900
    • http://chavagnes.com/index.php?article=1152.2&urwbo=2&pdf=1152
    • http://www.mantrabeautybar.ca/index.php?article=2297.1&rukbv=1&pdf=2297