Malicious PDF — malware analysis report

Static analysis result for SHA-256 39bf1157bb13c769…

MALICIOUS

PDF

18.9 KB Created: 2019-05-03 06:30:06 +01:00 Authoring application: mPDF 5.7
MD5: d240f917c8c17106a4a6a6b1d5b59ce0 SHA-1: eb076c53013517da01a7f9b4b61af3d27326bd31 SHA-256: 39bf1157bb13c7699cad974fdf4dfaaeeace22963b53cb36d7f645db0d71773e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of embedded URLs, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs, such as http://muicuiu.dumb1.com/3a08a02a05a05a02/Young-Adolf-by-Beryl-Bainbridge.pdf, are likely used to redirect users to malicious content or for SEO manipulation. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/3a08a02a05a05a02/Young-Adolf-by-Beryl-Bainbridge.pdf
    • http://muicuiu.dumb1.com/1a01a07a04a06a03a01/From-Yellow-Star-to-Pop-Star-How-one-young-girl-survived-the-Holocaust-and-became-a-singing-sensation-by-Dorit-Oliver-Wolff.pdf
    • http://muicuiu.dumb1.com/3a02a08a01a00a00/The-Splendid-Outcast-Beryl-Markham-s-African-Stories-by-Beryl-Markham.pdf
    • http://muicuiu.dumb1.com/2a03a09a00a09a09/Summer-of-the-Green-Star-by-Robert-C-Lee.pdf
    • http://muicuiu.dumb1.com/6a04a05a05a00a03/Summer-With-A-Star-Second-Chances-1-by-Merry-Farmer.pdf
    • http://muicuiu.dumb1.com/4a01a08a03/The-Midnight-Star-The-Young-Elites-3-by-Marie-Lu.pdf
    • http://muicuiu.dumb1.com/7a00a08a03a05/The-Midnight-Star-Young-Elites-3-by-Marie-Lu.pdf
    • http://muicuiu.dumb1.com/2a06a05a08a06a06/Raging-Star-Dust-Lands-3-by-Moira-Young.pdf
    • http://muicuiu.dumb1.com/6a06a02a05a08/Raging-Star-Dust-Lands-3-by-Moira-Young.pdf
    • http://muicuiu.dumb1.com/5a06a04a02a00a06/Summer-Bridge-Activities-for-Young-Christians-Grades-K---1-by-Julia-Ann-Hobbs.pdf
    • http://muicuiu.dumb1.com/8a06a01a05a03/Lightsabers-Star-Wars-Young-Jedi-Knights-4-by-Kevin-J-Anderson.pdf
    • http://muicuiu.dumb1.com/1a07a00a08a03a08/Sphynx-The-Story-of-the-Star-People-How-I-Spent-My-Summer-Vacation-2-by-Thomas-C-Gallo.pdf
    • http://muicuiu.dumb1.com/8a07a02a06a03/Return-to-Ord-Mantell-Star-Wars-Young-Jedi-Knights-12-by-Kevin-J-Anderson.pdf
    • http://muicuiu.dumb1.com/8a08a05a00a02/Heirs-of-the-Force-Star-Wars-Young-Jedi-Knights-1-by-Kevin-J-Anderson.pdf
    • http://muicuiu.dumb1.com/8a07a08a03a02/Delusions-of-Grandeur-Star-Wars-Young-Jedi-Knights-9-by-Kevin-J-Anderson.pdf
    • http://muicuiu.dumb1.com/8a07a04a04a06/Trouble-on-Cloud-City-Star-Wars-Young-Jedi-Knights-13-by-Kevin-J-Anderson.pdf
    • http://muicuiu.dumb1.com/4a08a06a08a08a02/A-Kim-Jong-Il-Production-The-Extraordinary-True-Story-of-a-Kidnapped-Filmmaker-His-Star-Actress-and-a-Young-Dictator-s-Rise-to-Power-by-Paul-Fischer.pdf
    • http://muicuiu.dumb1.com/6a05a07a09a09/Star-by-Star-Star-Wars-The-New-Jedi-Order-9-by-Troy-Denning.pdf
    • http://muicuiu.dumb1.com/3a06a05a03a04/Every-Man-for-Himself-by-Beryl-Bainbridge.pdf
    • http://muicuiu.dumb1.com/6a00a04a07a01/The-Dust-Lands-Trilogy-Blood-Red-Road-Rebel-Heart-Raging-Star-Dust-Lands-1-3-by-Moira-Young.pdf
    • http://muicuiu.dumb1.com/6a06a02a05a08/Raging-Star-Dust-Lands-3-by-Moi

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