Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8450ec1ee97adae…

MALICIOUS

PDF

12.7 KB Created: 2015-07-15 16:25:25 +04:00 Authoring application: DOMPDF
MD5: 9e204456c0ae3ddac9f7e90942d2ea47 SHA-1: 541809d5b07744273f7be6325b10fc9303e7136c SHA-256: f8450ec1ee97adae1b544bdc301db83ae1c9b01eb704d6c02e96e4f5a9878aa4
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 significant number of external links, indicative of a link farm. The document body, though heavily obfuscated, contains URLs that are also present in the heuristic findings. This suggests the primary purpose is to redirect users to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8742

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=1097.2&urwbo=2&pdf=1097
    • http://castres-ski-passion.fr/index.php?article=413.2&rpbeh=2&pdf=413
    • http://ballykeeljoinery.co.uk/index.php?article=1930.1&yxhkr=1&pdf=1930
    • http://chavagnes.com/index.php?article=623.2&urwbo=2&pdf=623
    • http://pamojaexpeditions.com/index.php?article=1679.2&lqpte=2&pdf=1679
    • http://chavagnes.com/index.php?article=993.2&urwbo=2&pdf=993
    • http://quraniarbi.com/index.php?article=141.2&sbfeb=2&pdf=141
    • http://www.mantrabeautybar.ca/index.php?article=2221.1&rukbv=1&pdf=2221
    • http://clockworkmovies.com/index.php?article=866.1&wgigr=1&pdf=866
    • http://chavagnes.com/index.php?article=960.2&urwbo=2&pdf=960
    • http://chavagnes.com/index.php?article=1348.2&urwbo=2&pdf=1348
    • http://chavagnes.com/index.php?article=1492.2&urwbo=2&pdf=1492
    • http://maderasdelcarmen.com/index.php?article=1829.2&hpepa=2&pdf=1829
    • http://chavagnes.com/index.php?article=2116.2&urwbo=2&pdf=2116
    • http://msobo.fr/index.php?article=1769.2&dfkro=2&pdf=1769
    • http://chavagnes.com/index.php?article=1034.2&urwbo=2&pdf=1034
    • http://tngszkolenia.com/index.php?article=1595.2&kiojv=2&pdf=1595

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