Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f92003f586b2444…

MALICIOUS

PDF

15.3 KB Created: 2020-03-18 23:13:56 +00:00 Authoring application: mPDF 5.7
MD5: 4782f0f3e389605326ca6865e794b54b SHA-1: b6cd3e0eaae5b636574d2b54a4ce567b3a7eaebb SHA-256: 5f92003f586b244438b2bcbeafba478cea338ed79c063481af60615b18a05f2f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which are likely used to redirect users to malicious websites or download further malware. The ML_NYX_PDF_MALICIOUS heuristic also flagged this PDF with high confidence. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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://owlaokopdf.myhome.cx/581668167816981678167/The-Basic-Writings-of-Bertrand-Russell-1903-1959-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/481688167816981618164/The-Basic-Writings-of-Bertrand-Russell-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/581668167816981678168/Bertrand-Russell-Speaks-His-Mind-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/381628163816481608162/Autobiography-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/281698162816381628160/The-Principles-of-Mathematics-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/681688169816081618162/The-Philosophy-Of-Bergson-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/381618163816681628160/The-Problems-of-Philosophy-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/581668168816081648165/Mysticism-and-Logic-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/581668168816081648164/The-Analysis-of-Mind-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/581668168816181678161/An-Outline-of-Philosophy-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/58165816581698162/Unpopular-Essays-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/68168816281678168/A-History-of-Western-Philosophy-Vol-IV-VI-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/281668167816281658163/In-Praise-of-Idleness-and-Other-Essays-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/581668168816181608168/The-Impact-of-Science-on-Society-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/481628161816481678163/History-of-Western-Philosophy-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/981698167816481628164/Hist-ria-do-pensamento-ocidental-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/581668168816081648167/Introducing-Bertrand-Russell-by-Dave-Robinson.pdf
    • http://owlaokopdf.myhome.cx/381698166816481608169/Why-I-am-not-a-Christian-And-Other-Essays-on-Religion-and-Related-Subjects-by-Bertrand-Russell.pdf
    • http://owlaokopdf.myhome.cx/581668168816181618161/Bertrand-Russell-The-Spirit-of-Solitude-1872-1921-by-Ray-Monk.pdf
    • http://owlaokopdf.myhome.cx/381698166816981698167/Proposed-Roads-to-Freedom-Socialism-Anarchism-and-Syndicalism-by-Bertrand-Russell.pdf

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