Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d3bb570f1be5f2b…

MALICIOUS

PDF

14.3 KB Created: 2019-05-02 18:09:03 +01:00 Authoring application: mPDF 5.7
MD5: b67dbaa697feb1bea9647f0d66c82d00 SHA-1: ad9c64f70093b203a9d9f28c5b907b2a9c51a86c SHA-256: 9d3bb570f1be5f2bddff0392f47a47d5fe953f0cbc4c27c34eba67d357df149a
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the PDF structure and embedded URLs suggest a content-luring or redirection attack. The primary IOCs are the numerous URLs embedded within the document.

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/1093090094099095/Elsie-s-Girlhood-The-Original-Elsie-Classics-3-by-Martha-Finley.pdf
    • http://loaminoo.linkpc.net/1094093098093090/Elsie-s-Great-Hope-A-Life-of-Faith-Elsie-Dinsmore-8-by-Martha-Finley.pdf
    • http://loaminoo.linkpc.net/1094093099096095/Elsie-s-Troubled-Times-A-Life-of-Faith-Elsie-Dinsmore-6-by-Martha-Finley.pdf
    • http://loaminoo.linkpc.net/4096096096091098/Elsie-Dinsmore-Elsie-Dinsmore-1-by-Martha-Finley.pdf
    • http://loaminoo.linkpc.net/3098095098097099/Elsie-Dinsmore-by-Martha-Finley.pdf
    • http://loaminoo.linkpc.net/1093090099092097/Mildred-and-Elsie-Mildred-Keith-3-by-Martha-Finley.pdf
    • http://loaminoo.linkpc.net/3097092097094092/Along-the-Indigo-by-Elsie-Chapman.pdf
    • http://loaminoo.linkpc.net/6090093099099092/Barrow-Sinister-by-Elsie-Lee.pdf
    • http://loaminoo.linkpc.net/2094091096093094/The-Roving-Tree-by-Elsie-Augustave.pdf
    • http://loaminoo.linkpc.net/3093091097095097/Mansion-of-Golden-Windows-by-Elsie-Lee.pdf
    • http://loaminoo.linkpc.net/1097099098096093/Divided-Dualed-2-by-Elsie-Chapman.pdf
    • http://loaminoo.linkpc.net/7092094094/Three-Things-About-Elsie-by-Joanna-Cannon.pdf
    • http://loaminoo.linkpc.net/5091099099095/Growing-Seasons-by-Elsie-Lee-Splear.pdf
    • http://loaminoo.linkpc.net/1090091096098098096/A-life-in-four-countries-by-Elsie-Margaret-Kiesow.pdf
    • http://loaminoo.linkpc.net/1091098092090096091/Albanische-Volksm-rchen-Albanian-Studies-25-by-Robert-Elsie.pdf
    • http://loaminoo.linkpc.net/3096094096093098/Cole-s-Bite-Sutton-Brothers-5-by-Elsie-Moore.pdf
    • http://loaminoo.linkpc.net/7091094090099099/Francois-Mauriac-In-Search-of-the-Infinite-by-Elsie-Pell.pdf
    • http://loaminoo.linkpc.net/1091092094098090090/The-Story-Of-Great-Brak-River-by-Margaret-Elsie-Franklin.pdf
    • http://loaminoo.linkpc.net/9091097092096095/Organizing-For-Care-Nursing-Units-And-Groups-by-Elsie-Schmied.pdf
    • http://loaminoo.linkpc.net/1090096090093095098/a-life-for-canby-elsie-egli-cutsforth-by-Lois-Leonard-efitor.pdf
    • http://loaminoo.linkpc.net/1090091096098098096/A-life-in-four-countries-b

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