Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1733eba4653bf98…

MALICIOUS

PDF

19.4 KB Created: 2019-04-30 03:44:12 +01:00 Authoring application: mPDF 5.7
MD5: c4b2bf7635dd2fd0cfcb04598f44f8b9 SHA-1: 693a70cd0141c98e8a232ebceeb886e0a9a5ae75 SHA-256: a1733eba4653bf983a2f01efc9b9d909280392537c6b53d5ac0ef02a02d6c108
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external websites, a technique often used for SEO manipulation or to redirect users to malicious content. The ML classifier strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, preventing a more detailed analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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
    • http://muicuiu.dumb1.com/3a04a04a05a05a00/Mister-Darcy-s-Dogs-A-Mister-Darcy-Series-Comedic-Mystery-1-by-Barbara-Silkstone.pdf
    • http://muicuiu.dumb1.com/3a07a01a08a06a07/The-Adventures-of-Mister-Bubble---Mister-Bubble-and-the-Greedy-Triplets-Colour-It-Yourself-Edition-by-Luke-Mathius-Harlow.pdf
    • http://muicuiu.dumb1.com/9a09a08a08a07/Mister-Sandman-by-Barbara-Gowdy.pdf
    • http://muicuiu.dumb1.com/1a01a00a08a00a04a01/-Hallo-Mister-Gott-hier-spricht-Anna-Anna-schreibt-an-Mister-Gott-Limitierte-Sonderausgabe-Zwei-Romane-by-Fynn.pdf
    • http://muicuiu.dumb1.com/5a09a00a08a06a00/Handbook-for-Hot-Witches-Dame-Darcy-s-Illustrated-Guide-to-Magic-Love-and-Creativity-by-Dame-Darcy.pdf
    • http://muicuiu.dumb1.com/1a06a04a06a01a02/Jade-Darcy-and-the-Affair-of-Honor-The-Rehumanization-of-Jade-Darcy-1-by-Stephen-Goldin.pdf
    • http://muicuiu.dumb1.com/1a04a06a09a02a09/Darcy-amp-Elizabeth-Nights-and-Days-at-Pemberley-Darcy-amp-Elizabeth-2-by-Linda-Berdoll.pdf
    • http://muicuiu.dumb1.com/7a05a01a02a08a05/The-Inseparable-Mr-and-Mrs-Darcy-Meryton-Mystery-3-by-Jennifer-Joy.pdf
    • http://muicuiu.dumb1.com/1a08a02a08a04/Matinicus----An-Island-Mystery-by-Darcy-Scott.pdf
    • http://muicuiu.dumb1.com/2a05a08a01a04a00/Grade-A-Stupid-The-Darcy-Walker-Series-1-by-A-J-Lape.pdf
    • http://muicuiu.dumb1.com/2a05a02a01a07a03/Dressed-to-Keel-A-Darcy-Cavanaugh-Mystery-1-by-Candy-Calvert.pdf
    • http://muicuiu.dumb1.com/2a08a02a03a09a02/The-Netherfield-Affair-A-Dark-Darcy-Mystery-by-Penelope-Swan.pdf
    • http://muicuiu.dumb1.com/4a06a09a05/Mr-Match-Mister-5-by-J-A-Huss.pdf
    • http://muicuiu.dumb1.com/2a03a06a07a05/Mister-Miracle-Vol-1-by-Tom-King.pdf
    • http://muicuiu.dumb1.com/3a05a09a06a01/Mister-Pip-by-Lloyd-Jones.pdf
    • http://muicuiu.dumb1.com/4a00a08a04a08a01/Mister-Socky-by-Tim-Miller.pdf
    • http://muicuiu.dumb1.com/4a07a06a04a07a03/Mister-Ed-and-Me-and-More-by-Alan-Young.pdf
    • http://muicuiu.dumb1.com/6a05a07a03a08a03/Mister-B-Up-in-the-air-Saison-4-by-R-K-Lilley.pdf
    • http://muicuiu.dumb1.com/1a01a04a02a02a05a08/Mister-Dynamit-524-Teufelskreis-by-C-H-Guenter.pdf
    • http://muicuiu.dumb1.com/4a08a07a04a07a07/Mister-Wrong-by-Nicole-Williams.pdf

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