Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce5932246e663e99…

MALICIOUS

PDF

11.6 KB Created: 2015-07-15 14:39:40 +04:00 Authoring application: DOMPDF
MD5: 60afda1f1b681580360e6552c7350240 SHA-1: d970fb0c6c15454ca21860de1f5750fd12982810 SHA-256: ce5932246e663e99df9f2931e3e7aeab0fa155d0008c70e4268b250a6b80d945
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which are likely used to drive traffic to various websites. The document body discusses binary options trading, suggesting a lure to financial scam or phishing content. The ML classifier also flagged the document as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9387

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=1855.1&wehsa=1&pdf=1855
    • http://vs-media.nl/index.php?article=321.1&nxjas=1&pdf=321
    • http://clockworkmovies.com/index.php?article=644.1&wgigr=1&pdf=644
    • http://photo-file.ru/index.php?article=1745.1&wehsa=1&pdf=1745
    • http://mudinside.it/index.php?article=222.2&ozinn=2&pdf=222
    • http://photo-file.ru/index.php?article=146.1&wehsa=1&pdf=146
    • http://sandystraitssizzlers.com/index.php?article=585.1&kwbat=1&pdf=585
    • http://konserborsasi.com/index.php?article=956.1&ntrdf=1&pdf=956
    • http://marcogulf.com/index.php?article=328.1&puzto=1&pdf=328
    • http://photo-file.ru/index.php?article=1213.1&wehsa=1&pdf=1213
    • http://photo-file.ru/index.php?article=363.1&wehsa=1&pdf=363
    • http://photo-file.ru/index.php?article=1436.1&wehsa=1&pdf=1436
    • http://intelluride.co/index.php?article=1820.1&gdfls=1&pdf=1820
    • http://photo-file.ru/index.php?article=2399.1&wehsa=1&pdf=2399
    • http://lifesweetner.es/index.php?article=579.1&wddqo=1&pdf=579
    • http://photo-file.ru/index.php?article=2291.1&wehsa=1&pdf=2291
    • http://www.mantrabeautybar.ca/index.php?article=2084.1&rukbv=1&pdf=2084

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