Malicious PDF — malware analysis report

Static analysis result for SHA-256 43a7c1651c89e8eb…

MALICIOUS

PDF

11.9 KB Created: 2015-07-15 14:38:41 +04:00 Authoring application: DOMPDF
MD5: 91b1d6d90b0c68c33973d972b83f622b SHA-1: 45d3d02767735f2fec0ccb66ec2778944786753a SHA-256: 43a7c1651c89e8ebec068c441064183b160b1d8979b3946d59b87a0aae1754e2
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and contains a large number of embedded URLs, indicating a link farm. The document body discusses financial trading, suggesting a lure to redirect users to potentially malicious websites hosted on domains like photo-file.ru. No scripts were extracted from this sample.

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://photo-file.ru/index.php?article=1074.1&wehsa=1&pdf=1074
    • http://www.mantrabeautybar.ca/index.php?article=1614.1&rukbv=1&pdf=1614
    • http://www.masajesmexicali.com/index.php?article=815.1&pjtcs=1&pdf=815
    • http://photo-file.ru/index.php?article=904.1&wehsa=1&pdf=904
    • http://barrainformativa.com/index.php?article=1992.2&eyxlg=2&pdf=1992
    • http://photo-file.ru/index.php?article=1898.1&wehsa=1&pdf=1898
    • http://aslanasansorleri.com.tr/index.php?article=1942.1&urrqb=1&pdf=1942
    • http://kredite-fuer-arbeitslose.net/index.php?article=1608.1&jhins=1&pdf=1608
    • http://TomOn.tv/index.php?article=916.1&oeyju=1&pdf=916
    • http://photo-file.ru/index.php?article=684.1&wehsa=1&pdf=684
    • http://photo-file.ru/index.php?article=231.1&wehsa=1&pdf=231
    • http://photo-file.ru/index.php?article=142.1&wehsa=1&pdf=142
    • http://modart.com.tr/index.php?article=410.1&ykgew=1&pdf=410
    • http://photo-file.ru/index.php?article=78.1&wehsa=1&pdf=78
    • http://karolek.com.pl/index.php?article=1209.1&fwvio=1&pdf=1209
    • http://photo-file.ru/index.php?article=1309.1&wehsa=1&pdf=1309
    • http://cierzodemontana.com/index.php?article=779.7&vfjgt=7&pdf=779

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