Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c12877cc5016d59…

MALICIOUS

PDF

19.8 KB Created: 2019-04-30 11:19:41 +01:00 Authoring application: mPDF 5.7
MD5: 06878676de98cad8460d5370f580f3bb SHA-1: d96e31028eb4adaa8293c0a37974c58c18131c3a SHA-256: 8c12877cc5016d59f33762505e4145eb810831429b9e5cab67b6ff69f9fa7abe
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which suggests a link farm or distribution mechanism. The ML classifier also flagged this PDF as malicious with high confidence. While the document body is heavily obfuscated, the presence of numerous links points to a malicious intent, likely to redirect users to potentially harmful sites or to manipulate search engine results.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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/4092094099094095/Defending-Constantine-The-Twilight-of-an-Empire-and-the-Dawn-of-Christendom-by-Peter-J-Leithart.pdf
    • http://loaminoo.linkpc.net/1090098094093090097/The-Mist-of-Matson-Creek-Matson-Creek-Series-Book-1-by-Beverly-Kovatch.pdf
    • http://loaminoo.linkpc.net/2091099097098093/Empire-Games-Empire-Games-1-Merchant-Princes-Universe-7-by-Charles-Stross.pdf
    • http://loaminoo.linkpc.net/3092098099096090/The-Empire-Of-Darkness-by-Christian-Jacq.pdf
    • http://loaminoo.linkpc.net/7090094090098096/Annals-of-the-Turkish-Empire-from-1591-to-1659-of-the-Christian-Era-by-Naima.pdf
    • http://loaminoo.linkpc.net/3093091092093094/The-Golden-Empire-Spain-Charles-V-and-the-Creation-of-America-by-Hugh-Thomas.pdf
    • http://loaminoo.linkpc.net/7097090092092092/The-Doctrine-of-Humanity-Contours-of-Christian-Theology-5-by-Charles-Sherlock.pdf
    • http://loaminoo.linkpc.net/5093097094093097/Writing-Genre-Fiction-Creating-Imaginary-Worlds-The-12-Rules-by-Charles-Christian.pdf
    • http://loaminoo.linkpc.net/6091095092094096/The-Transformation-of-Culture-Christian-Social-Ethics-After-H-Richard-Niebuhr-by-Charles-Scriven.pdf
    • http://loaminoo.linkpc.net/5098095098092091/The-Cambridge-Medieval-History---Book-XV-The-Eastern-Roman-Empire-from-Isaac-I-to-Andronicus-by-Charles-Kadlec.pdf
    • http://loaminoo.linkpc.net/8094094094096096/The-Prince-Utopia-Ninety-Five-Theses-Address-to-the-German-Nobility-Concerning-Christian-Liberty-Part-36-Harvard-Classics-by-Charles-William-Eliot.pdf
    • http://loaminoo.linkpc.net/2092091098090094/Natural-Religion-amp-Christian-Theology-Vol-1-Science-amp-Religion-Gifford-Lectures-1951-by-Charles-E-Raven.pdf
    • http://loaminoo.linkpc.net/1091096095098097/Nil-Nil-1-by-Lynne-Matson.pdf
    • http://loaminoo.linkpc.net/7092094092099090/Nil-Remembered-Nil-0-5-by-Lynne-Matson.pdf
    • http://loaminoo.linkpc.net/3091098098/The-Unexpected-Everything-by-Morgan-Matson.pdf
    • http://loaminoo.linkpc.net/1090098094092099097/No-Holds-The-Fighter-Series-4-by-T-C-Matson.pdf
    • http://loaminoo.linkpc.net/1090098094096091096/Meini-The-Blasket-Nurse-by-Leslie-Matson.pdf
    • http://loaminoo.linkpc.net/6092096099095/Amy-amp-Roger-s-Epic-Detour-by-Morgan-Matson.pdf
    • http://loaminoo.linkpc.net/1090098094093096098/Inorganic-Chemistry-for-Dummies-by-Michael-Matson.pdf
    • http://loaminoo.linkpc.net/1090098094093096095/Innovate-or-Die-A-Personal-Perspective-on-the-Art-of-Innovation-by-Jack-V-Matson.pdf