Malicious PDF — malware analysis report

Static analysis result for SHA-256 57594a18acefe2c2…

MALICIOUS

PDF

14.8 KB Created: 2019-05-02 19:30:06 +01:00 Authoring application: mPDF 5.7
MD5: 2ba2e39e7841da780efc13961ea8cadf SHA-1: 7d031d042c4cab1f299df81884f744d5cab7425a SHA-256: 57594a18acefe2c2dcecfb19aca6d60b2af0b10c0c0f251f494f71b2d215b631
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. These URLs point to what appear to be book download sites, but the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO manipulation or to host further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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://loaminoo.linkpc.net/8093094096092/The-Brothers-Grimm-Fairy-Tales-An-Illustrated-Classic-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/3092090096092097/The-Complete-Brothers-Grimm-Fairy-Tales-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/1090097099090099092/Fairy-Tales-complete-original-story-Biography-Brothers-Grimm-amp-bonus-50-illustration-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/2097094093090098/The-Fairy-Tales-of-the-Brothers-Grimm-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/2092092093093095/The-German-Legends-of-the-Brothers-Grimm-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/5098098091091093/The-Complete-Grimm-s-Fairy-Tales-The-Original-Classics---Illustrated-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/7090092098095090/Grimm-s-Fairy-Tales-Barnes-and-Noble-Classics-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/8098099093099096/The-Complete-Grimm-s-Fairy-Tales-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/4099097097091094/Grimm-s-Complete-Fairy-Tales-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/5090094098094093/Grimm-s-Complete-Fairy-Tales-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/2096092090097091/Grimm-s-Fairy-Tales-Children-s-and-Household-Tales-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/3092096092092/Grimm-s-Fairy-Tales-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/8090097099094093/Grimm-s-Fairy-Tales-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/2096097099090097/Grimm-s-Fairy-Tales-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/2098095095099099/Grimm-s-Fairy-Tales-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/9093097090098092/H-nsel-und-Gretel-Die-sch-nsten-M-rchen-der-Br-der-Grimm-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/4097096094092098/Grimms-Fairy-Tales-Volume-2-Sleeping-Beauty-and-Other-Tales-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/3092098091090099/Grimms-Fairy-Tales-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/6094092097097093/The-Complete-Fairy-Tales-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/4096097096095091/Grimms-Fairy-Tales-by-Jacob-Grimm.pdf
    • http://loaminoo.linkpc.net/5090094098094093/Grimm-s-Complete-Fairy-Tales-b

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