Malicious PDF — malware analysis report

Static analysis result for SHA-256 3369eb328a7ef233…

MALICIOUS

PDF

11.9 KB Created: 2015-07-15 16:27:05 +04:00 Authoring application: DOMPDF
MD5: 22888c5753e6681a97469423c1fb1c7c SHA-1: 19b6417904d49fb265615a87889c0001827f9782 SHA-256: 3369eb328a7ef233ea48d76ed7e5ce14863d3258319184970a511dc8aecbba65
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to various external websites. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external link farm, suggesting the primary purpose is to manipulate search engine rankings or redirect users to potentially malicious content hosted on these sites. The ML classifier also flagged the PDF as malicious with high confidence. No scripts were extracted, and the document body contained mostly garbled text with some URLs.

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=1364.2&urwbo=2&pdf=1364
    • http://www.wslab.co/index.php?article=2432.1&fvtfv=1&pdf=2432
    • http://alears.lv/index.php?article=2165.2&cqwcy=2&pdf=2165
    • http://chavagnes.com/index.php?article=1014.2&urwbo=2&pdf=1014
    • http://wbus.nl/index.php?article=1940.7&exicf=7&pdf=1940
    • http://chavagnes.com/index.php?article=1975.2&urwbo=2&pdf=1975
    • http://dhyansuman.com/index.php?article=978.8&xvanh=8&pdf=978
    • http://www.mantrabeautybar.ca/index.php?article=2299.1&rukbv=1&pdf=2299
    • http://tngszkolenia.com/index.php?article=1579.2&kiojv=2&pdf=1579
    • http://chavagnes.com/index.php?article=2133.2&urwbo=2&pdf=2133
    • http://chavagnes.com/index.php?article=155.2&urwbo=2&pdf=155
    • http://chavagnes.com/index.php?article=1819.2&urwbo=2&pdf=1819
    • http://brightworldinfotech.com/index.php?article=797.1&qfqoh=1&pdf=797
    • http://chavagnes.com/index.php?article=1316.2&urwbo=2&pdf=1316
    • http://massiv-holz-moebel.de/index.php?article=941.1&onxqu=1&pdf=941
    • http://chavagnes.com/index.php?article=1284.2&urwbo=2&pdf=1284
    • http://www.masajesmexicali.com/index.php?article=1655.1&pjtcs=1&pdf=1655

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