Malicious PDF — malware analysis report

Static analysis result for SHA-256 340f8bd4625ec4d3…

MALICIOUS

PDF

11.7 KB Created: 2015-07-15 16:27:21 +04:00 Authoring application: DOMPDF
MD5: 3daac84dd11993e106d0936153e903f0 SHA-1: 50b0c08b70228e7cc10d3850da196b70509cb0e9 SHA-256: 340f8bd4625ec4d3da3bb9e3ee1c80e408e42f3c0dde0880c9ae19d19bace061
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm, which is a common tactic for SEO manipulation or distributing malicious content. The ML classifier also flagged the PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs within the document body suggests an attempt to redirect the user to potentially harmful external sites.

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://chavagnes.com/index.php?article=1415.2&urwbo=2&pdf=1415
    • http://kardiola.pl/index.php?article=923.1&xyjeh=1&pdf=923
    • http://www.mantrabeautybar.ca/index.php?article=989.1&rukbv=1&pdf=989
    • http://chavagnes.com/index.php?article=152.2&urwbo=2&pdf=152
    • http://godfer-racing.org/index.php?article=676.6&tihit=6&pdf=676
    • http://chavagnes.com/index.php?article=1184.2&urwbo=2&pdf=1184
    • http://immofina-solutions.com/index.php?article=1254.1&gzogv=1&pdf=1254
    • http://www.wallart.com.es/index.php?article=2124.1&dxunj=1&pdf=2124
    • http://yapi-yapi.com/index.php?article=1040.4&uiwvz=4&pdf=1040
    • http://chavagnes.com/index.php?article=352.2&urwbo=2&pdf=352
    • http://chavagnes.com/index.php?article=356.2&urwbo=2&pdf=356
    • http://chavagnes.com/index.php?article=388.2&urwbo=2&pdf=388
    • http://wbus.nl/index.php?article=2155.7&exicf=7&pdf=2155
    • http://chavagnes.com/index.php?article=2384.2&urwbo=2&pdf=2384
    • http://phillipsandcoinc.com/index.php?article=2108.1&sxlyu=1&pdf=2108
    • http://chavagnes.com/index.php?article=2115.2&urwbo=2&pdf=2115
    • http://harmenhomes.ca/index.php?article=93.1&wcdhp=1&pdf=93

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