Malicious PDF — malware analysis report

Static analysis result for SHA-256 6794f20d4ab7fdb2…

MALICIOUS

PDF

12.4 KB Created: 2015-07-15 14:38:32 +04:00 Authoring application: DOMPDF
MD5: 70f833bd01d3692f45b290706db0d12a SHA-1: b92e3bb292fe613a1a905b1279c6ae7d85e5d65c SHA-256: 6794f20d4ab7fdb26c0530d1d33d2445e9d964a199cbc90336d3f6a2eb305f36
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a significant number of embedded URLs, indicating a likely SEO spam or phishing campaign. The document body, though heavily obfuscated, contains these URLs, suggesting an attempt to redirect users to potentially malicious content. No scripts were extracted from this sample.

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://photo-file.ru/index.php?article=995.1&wehsa=1&pdf=995
    • http://fresh2death.com/index.php?article=1145.1&lzrlo=1&pdf=1145
    • http://www.ecoservice.co/index.php?article=701.1&egezd=1&pdf=701
    • http://photo-file.ru/index.php?article=1429.1&wehsa=1&pdf=1429
    • http://harmenhomes.ca/index.php?article=2082.1&wcdhp=1&pdf=2082
    • http://photo-file.ru/index.php?article=2324.1&wehsa=1&pdf=2324
    • http://ura-sandoz.com/index.php?article=190.1&nydkb=1&pdf=190
    • http://zomodiet.com/index.php?article=1938.1&tqubb=1&pdf=1938
    • http://www.mantrabeautybar.ca/index.php?article=893.1&rukbv=1&pdf=893
    • http://photo-file.ru/index.php?article=1733.1&wehsa=1&pdf=1733
    • http://photo-file.ru/index.php?article=1467.1&wehsa=1&pdf=1467
    • http://photo-file.ru/index.php?article=1263.1&wehsa=1&pdf=1263
    • http://intelluride.co/index.php?article=1266.1&gdfls=1&pdf=1266
    • http://photo-file.ru/index.php?article=1019.1&wehsa=1&pdf=1019
    • http://whereabouts.eu/index.php?article=913.2&ahydd=2&pdf=913
    • http://photo-file.ru/index.php?article=2053.1&wehsa=1&pdf=2053
    • http://kardiola.pl/index.php?article=481.1&xyjeh=1&pdf=481

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