Malicious PDF — malware analysis report

Static analysis result for SHA-256 43d005aa6d8f48fb…

MALICIOUS

PDF

18.9 KB Created: 2019-04-30 02:24:37 +01:00 Authoring application: mPDF 5.7
MD5: 50c89f10f24e3e342053ce3caf195ea2 SHA-1: 1edc285ec24089a2c41c59bb36abfa257f0869dc SHA-256: 43d005aa6d8f48fbc0e8b14eee679b0393a32b3d1003f9ec21789f860e7de78e
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. While most of these URLs are currently marked as benign, the sheer volume and the ML classifier's high confidence score suggest a malicious intent, likely for SEO poisoning or to redirect users to malicious sites. 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/2a05a04a03a04/Star-Prince-Star-2-by-Susan-Grant.pdf
    • http://muicuiu.dumb1.com/3a09a06a09a05a03/The-Star-King-Star-1-by-Susan-Grant.pdf
    • http://muicuiu.dumb1.com/1a02a04a06a06/Star-King-Star-1-by-Susan-Grant.pdf
    • http://muicuiu.dumb1.com/6a05a07a09a09/Star-by-Star-Star-Wars-The-New-Jedi-Order-9-by-Troy-Denning.pdf
    • http://muicuiu.dumb1.com/3a00a07a09a03a07/Batman-Incorporated-Volume-1-Demon-Star-by-Grant-Morrison.pdf
    • http://muicuiu.dumb1.com/4a08a01a04a08a06/Lone-Star-Prince-by-Cindy-Gerard.pdf
    • http://muicuiu.dumb1.com/8a00a09a09a01/The-Star-Scroll-Dragon-Prince-2-by-Melanie-Rawn.pdf
    • http://muicuiu.dumb1.com/4a00a06a04a09a08/The-Lost-Prince-Star-Chase-1-by-Saxon-Andrew.pdf
    • http://muicuiu.dumb1.com/3a09a08a00a06a06/Loved-by-the-Alien-Prince-Star-Hearts-4-by-Luna-Cassini.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/1a05a05a05a07a00/Star-Soldier-Doom-Star-1-by-Vaughn-Heppner.pdf
    • http://muicuiu.dumb1.com/4a08a02a01a00a07/The-Redeemable-Prince-Star-Crossed-series-Book-7-by-Rachel-Higginson.pdf
    • http://muicuiu.dumb1.com/4a02a03a01a08a07/You-Don-t-Have-to-Be-a-Star-Montana-Fire-0-5-by-Susan-May-Warren.pdf
    • http://muicuiu.dumb1.com/1a01a06a07a02a08/Under-Her-Skin-Lone-Star-Sisters-1-by-Susan-Mallery.pdf
    • http://muicuiu.dumb1.com/2a08a07a06/Porn-Star-P-rn-Star-1-by-Laurelin-Paige.pdf
    • http://muicuiu.dumb1.com/1a04a04a00a08a05/Star-of-Fear-Star-of-Hope-by-Jo-Hoestlandt.pdf
    • http://muicuiu.dumb1.com/2a09a09a06a02a03/Prince-Drake-and-the-Rock-Star-Royal-Mates-Love-s-Diamond-5-by-Lyssa-Samuels.pdf
    • http://muicuiu.dumb1.com/9a06a08a08a07a03/Star-Wars-Das-Imperium-schl-gt-zur-ck---Du-willst-also-ein-Jedi-werden-Star-Wars-Illustrated-Novels-2-by-Adam-Gidwitz.pdf
    • http://muicuiu.dumb1.com/6a06a01a05a09a03/Star-Wars-Chevaliers-de-l-ancienne-r-publique-T01-Il-y-a-bien-longtemps-Star-Wars-Knights-of-the-Old-Republic-1-by-John-Jackson-Miller.pdf
    • http://muicuiu.dumb1.com/9a04a07a03a06a02/Star-Wars-Leia-Prinzessin-von-Alderaan-Journey-to-Star-Wars-Die-letzten-Jedi-by-Claudia-Gray.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-W

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