Malicious PDF — malware analysis report

Static analysis result for SHA-256 84e7dfda0913401e…

MALICIOUS

PDF

20.9 KB Created: 2019-04-30 04:01:12 +01:00 Authoring application: mPDF 5.7
MD5: 92d180c59e2ab7e1ab07ee17892df957 SHA-1: fe1bb4d7456d00db06f76e99cd09e68fa5a34110 SHA-256: 84e7dfda0913401e70b201164f46e5be5ace2371f00d89580d724d95abcfe069
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of embedded URLs, identified as a link farm. While most of these URLs were classified as benign, the sheer volume and the heuristic firing of PDF_SEO_LINK_FARM suggest a malicious intent, possibly for SEO manipulation or to distribute further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://muicuiu.dumb1.com/8a06a05a05a04a00/In-the-Valley-of-the-Shadow-On-the-Foundations-of-Religious-Belief-by-James-L-Kugel.pdf
    • http://muicuiu.dumb1.com/4a02a05a02a01a04/The-Myth-of-Religious-Neutrality-An-Essay-on-the-Hidden-Role-of-Religious-Belief-in-Theories-Revised-Edition-by-Roy-A-Clouser.pdf
    • http://muicuiu.dumb1.com/2a00a00a01a05a00/Worlds-of-Wonder-Days-of-Judgment-Popular-Religious-Belief-in-Early-New-England-by-David-D-Hall.pdf
    • http://muicuiu.dumb1.com/8a06a05a07a07a03/Prayers-That-Cite-Scripture-by-James-L-Kugel.pdf
    • http://muicuiu.dumb1.com/1a02a08a03a08a06/How-to-Read-the-Bible-A-Guide-to-Scripture-Then-and-Now-by-James-L-Kugel.pdf
    • http://muicuiu.dumb1.com/2a06a03a08a09a07/Sins-of-the-Father-The-Long-Shadow-of-a-Religious-Cult-by-Fleur-Beale.pdf
    • http://muicuiu.dumb1.com/1a01a00a03a06a07a05/Legends-of-the-Patriarchs-and-Prophets-Author-of-quot-Curious-Myths-of-the-Middle-Ages-quot-quot-The-Origin-and-Development-of-Religious-Belief-quot-quot-In-Exitu-Israel-quot-etc-by-Sabine-Baring-Gould.pdf
    • http://muicuiu.dumb1.com/4a04a02a07a04a06/Nil-A-World-Beyond-Belief-by-James-Turner.pdf
    • http://muicuiu.dumb1.com/5a07a05a07a08/Valley-of-the-Shadow-by-Tom-Pawlik.pdf
    • http://muicuiu.dumb1.com/2a05a05a07a03a01/Valley-of-the-Shadow-by-Ralph-Peters.pdf
    • http://muicuiu.dumb1.com/2a01a07a04a08a08/The-Varieties-of-Religious-Experience-by-William-James.pdf
    • http://muicuiu.dumb1.com/3a07a07a04a02/The-Varieties-of-Religious-Experience-by-William-James.pdf
    • http://muicuiu.dumb1.com/5a09a04a05a02a02/Foundations-of-the-Christian-Religion-Foundations-of-Faith-by-Blaise-Pascal.pdf
    • http://muicuiu.dumb1.com/9a07a06a06a07a09/Valley-of-the-Shadow-by-Franklin-Allen-Leib.pdf
    • http://muicuiu.dumb1.com/2a05a05a03a02a00/Out-of-the-Shadow-Cattle-Valley-6-by-Carol-Lynne.pdf
    • http://muicuiu.dumb1.com/2a04a05a09a08/Isaac-Asimov-The-Foundations-of-Science-Fiction-by-James-E-Gunn.pdf
    • http://muicuiu.dumb1.com/3a03a00a06a01a09/Foundations-of-Discord-to-Foundations-of-Healing-Book-4--An-Interactive-Guide-to-Building-Healthy-Relationships-by-Christopher-Earle.pdf
    • http://muicuiu.dumb1.com/1a00a06a06a00a03a07/Tea-in-China-A-Religious-and-Cultural-History-by-James-A-Benn.pdf
    • http://muicuiu.dumb1.com/2a07a02a05a07a05/Walking-Through-the-Valley-of-the-Shadow-of-Death-by-Kimberly-Carolan.pdf
    • http://muicuiu.dumb1.com/2a07a05a01a07a08/The-Calculus-of-Consent-Logical-Foundations-of-Constitutional-Democracy-by-James-M-Buchanan.pdf
    • http://muicuiu.dumb1.com/1a02a08a03a08a06/How-to-Read-the-