Malicious PDF — malware analysis report

Static analysis result for SHA-256 93492438d4f7b01a…

MALICIOUS

PDF

12.4 KB Created: 2015-07-15 14:40:53 +04:00 Authoring application: DOMPDF
MD5: 304fe71c430fe0b3b122d41ce9ae6d8b SHA-1: 86765f320e25a9db4177b1a2271e8cfb3df54057 SHA-256: 93492438d4f7b01a1eaac15f98793e9549c826e6f126e92a4104c700828d3ab4
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to SEO-optimized pages, a technique often used to distribute malicious content or conduct phishing. The ML classifier also flagged this PDF as malicious. The document body contains keywords related to financial trading and scams, reinforcing the malicious intent.

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=518.1&wehsa=1&pdf=518
    • http://fabrykablysku.com/index.php?article=1356.1&otolk=1&pdf=1356
    • http://www.lifedreams.es/index.php?article=274.1&isbrk=1&pdf=274
    • http://photo-file.ru/index.php?article=632.1&wehsa=1&pdf=632
    • http://primetimerecords.com/index.php?article=849.1&cvsqx=1&pdf=849
    • http://photo-file.ru/index.php?article=126.1&wehsa=1&pdf=126
    • http://149clean.com/index.php?article=2352.2&lkxaf=2&pdf=2352
    • http://krummenacher-haustechnik.ch/index.php?article=227.1&ptfan=1&pdf=227
    • http://vs-media.nl/index.php?article=1691.1&nxjas=1&pdf=1691
    • http://photo-file.ru/index.php?article=456.1&wehsa=1&pdf=456
    • http://photo-file.ru/index.php?article=1709.1&wehsa=1&pdf=1709
    • http://photo-file.ru/index.php?article=1799.1&wehsa=1&pdf=1799
    • http://ve-klubben.dk/index.php?article=79.1&zcpvv=1&pdf=79
    • http://photo-file.ru/index.php?article=1500.1&wehsa=1&pdf=1500
    • http://www.mantrabeautybar.ca/index.php?article=1573.1&rukbv=1&pdf=1573
    • http://photo-file.ru/index.php?article=139.1&wehsa=1&pdf=139
    • http://madejalook.com/index.php?article=1748.1&ynlkg=1&pdf=1748

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