Malicious PDF — malware analysis report

Static analysis result for SHA-256 a269f1d55101c7cb…

MALICIOUS

PDF

11.8 KB Created: 2015-07-15 14:36:58 +04:00 Authoring application: DOMPDF
MD5: bee1514d7f54ca9abb94fa8bb142506c SHA-1: 584cb351b77f6ab823132470c0baafd7724913b6 SHA-256: a269f1d55101c7cb6f42f67e14340bf2e03a750fa548767c5a1a91c07c7e8f98
90 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs pointing to various external websites. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external link farm, suggesting the primary purpose is to manipulate search engine rankings or redirect users to potentially malicious content hosted on these sites. The ML classifier also flagged the PDF as malicious with high confidence. 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=2343.1&wehsa=1&pdf=2343
    • http://www.faceausoleil.com/index.php?article=2389.2&ipbvv=2&pdf=2389
    • http://tngszkolenia.com/index.php?article=1841.2&kiojv=2&pdf=1841
    • http://photo-file.ru/index.php?article=1034.1&wehsa=1&pdf=1034
    • http://sestramaca.hr/index.php?article=1470.3&jjcxv=3&pdf=1470
    • http://photo-file.ru/index.php?article=281.1&wehsa=1&pdf=281
    • http://www.otomatmarket.com.tr/index.php?article=2326.1&vbepn=1&pdf=2326
    • http://cierzodemontana.com/index.php?article=2061.7&vfjgt=7&pdf=2061
    • http://kredite-fuer-arbeitslose.net/index.php?article=976.1&jhins=1&pdf=976
    • http://photo-file.ru/index.php?article=851.1&wehsa=1&pdf=851
    • http://photo-file.ru/index.php?article=40.1&wehsa=1&pdf=40
    • http://photo-file.ru/index.php?article=166.1&wehsa=1&pdf=166
    • http://marmoleraflores.com/index.php?article=616.2&qultr=2&pdf=616
    • http://photo-file.ru/index.php?article=1271.1&wehsa=1&pdf=1271
    • http://www.mantrabeautybar.ca/index.php?article=2120.1&rukbv=1&pdf=2120
    • http://photo-file.ru/index.php?article=1656.1&wehsa=1&pdf=1656
    • http://zamca.ro/index.php?article=1642.1&jxoor=1&pdf=1642

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