Malicious PDF — malware analysis report

Static analysis result for SHA-256 2552d92e55e52d78…

MALICIOUS

PDF

16.2 KB Created: 2019-05-02 01:09:51 +01:00 Authoring application: mPDF 5.7
MD5: 2214efc2fe18d5418ee7dacfa486f6f9 SHA-1: 670f809160e715212c5686b6153290be07f01434 SHA-256: 2552d92e55e52d78c02d6c121ebd2903f9304dc1fdd51b3ab2e5ae46ccb3c6db
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, characteristic of a link farm. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves directing users to a potentially malicious collection of links, likely for SEO poisoning or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/9095093090096095/The-Shakespeare-Plays-A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/5093098097090095/A-New-Variorum-Edition-of-Shakespeare-Midsummer-Night-s-Dream-1895-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/7099096090098099/The-Yale-Shakespeare-A-Midsummer-Night-s-Dream-Ed-by-W-H-Durham-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/8094091097092094/A-Midsummer-Night-s-Dream-with-related-Readings-Global-Shakespeare-Series-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/1090091092095097090/Life-of-Shakespeare-A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/5093092095092098/A-Midsummer-Night-s-Dream-Propeller-Shakespeare-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/1091095099090092092/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/7096098096097098/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/8092098096093095/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/3095097097/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/9098096093096090/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/8095092095094093/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/5097095090091093/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/6096093096093090/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/1090094091097098095/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/8093099097097096/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/8096093093099097/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/7092094090090091/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/5095094094090099/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/6094092092096094/A-Midsummer-Night-s-Dream-by-William-Shakespeare.pdf
    • http://loaminoo.linkpc.net/

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