Malicious PDF — malware analysis report

Static analysis result for SHA-256 121b9339ab9aead1…

MALICIOUS

PDF

12.2 KB Created: 2015-07-15 14:40:04 +04:00 Authoring application: DOMPDF
MD5: 0a09aa332c79b4ddb466b99bf7903c74 SHA-1: af8ab671df3c936e9c370c8b2c3f455d4cb5557c SHA-256: 121b9339ab9aead18726aeba776909a9369f14b2f0ae34395c311c8db90eab0a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The ML classifier also flagged the document as malicious. The document body contains text related to binary trading and includes many of the same URLs, reinforcing the idea that the primary purpose is to direct users to external, potentially malicious, websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8883

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=2060.1&wehsa=1&pdf=2060
    • http://acast.ru/index.php?article=1699.5&zueuf=5&pdf=1699
    • http://phillipsandcoinc.com/index.php?article=2115.1&sxlyu=1&pdf=2115
    • http://photo-file.ru/index.php?article=993.1&wehsa=1&pdf=993
    • http://epremier.ro/index.php?article=725.1&ivdfx=1&pdf=725
    • http://photo-file.ru/index.php?article=906.1&wehsa=1&pdf=906
    • http://archerwealth.com.au/index.php?article=446.1&ldzws=1&pdf=446
    • http://www.mantrabeautybar.ca/index.php?article=1226.1&rukbv=1&pdf=1226
    • http://gchrismanelectric.com/index.php?article=1952.1&txuhv=1&pdf=1952
    • http://photo-file.ru/index.php?article=688.1&wehsa=1&pdf=688
    • http://photo-file.ru/index.php?article=220.1&wehsa=1&pdf=220
    • http://photo-file.ru/index.php?article=2242.1&wehsa=1&pdf=2242
    • http://www.fabulaeventos.com.br/index.php?article=2189.1&ipwdu=1&pdf=2189
    • http://photo-file.ru/index.php?article=157.1&wehsa=1&pdf=157
    • http://ve-klubber.dk/index.php?article=258.1&jzwgf=1&pdf=258
    • http://photo-file.ru/index.php?article=916.1&wehsa=1&pdf=916
    • http://godfer-racing.org/index.php?article=93.6&tihit=6&pdf=93

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