Malicious PDF — malware analysis report

Static analysis result for SHA-256 aae5256e9b04f525…

MALICIOUS

PDF

21.0 KB Created: 2019-05-02 17:14:38 +01:00 Authoring application: mPDF 5.7
MD5: f4796bd8b1d092a5e45fe349323dd0b0 SHA-1: 9a3a5dea42e8cf24a4f6f41ee9a021d3f77535f3 SHA-256: aae5256e9b04f525d2be820a911a42f388aadfc25a2146dd917e104064f7a6cd
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which suggests a link farm attack pattern. The ML classifier also flagged the PDF as malicious. While the majority of the extracted URLs are marked as benign, the sheer volume and the heuristic firing indicate a malicious intent to direct users to external content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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/1a03a00a02a09a09/Chosen-The-Lost-Diaries-of-Queen-Esther-Lost-Loves-of-the-Bible-1-by-Ginger-Garrett.pdf
    • http://muicuiu.dumb1.com/3a01a06a05a05a07/Pets-in-Space-Cats-Dogs-and-Other-Worldly-Creatures-Pets-in-Space-Anthologies-1-by-S-E-Smith.pdf
    • http://muicuiu.dumb1.com/3a01a09a01a08a08/The-Lost-Books-of-the-Bible-by-William-Hone.pdf
    • http://muicuiu.dumb1.com/1a00a07a06a01a06a05/Blueberry-Muffins-and-Other-Thoughts-by-Jamey-Boelhower.pdf
    • http://muicuiu.dumb1.com/8a00a07a07a02a09/King-James-The-Holy-Bible-the-bible-bible-bible-study-jesus-religion-religious-heaven-king-james-old-testament-new-testament-prayer-books-christian-by-Anonymous.pdf
    • http://muicuiu.dumb1.com/6a06a09a03a07a01/The-Herbalist-s-Bible-John-Parkinson-s-Lost-Classic-Rediscovered-by-Julie-Bruton-Seal.pdf
    • http://muicuiu.dumb1.com/4a01a03a04a08a09/Not-That-Kind-of-Girl-by-Lena-Dunham.pdf
    • http://muicuiu.dumb1.com/4a03a00a02a06a06/The-Proviso-Tales-of-Dunham-1-by-Moriah-Jovan.pdf
    • http://muicuiu.dumb1.com/4a04a01a04a04a03/The-Flight-Cage-Poems-by-Rebecca-Dunham.pdf
    • http://muicuiu.dumb1.com/1a06a01a04a09a01/All-By-My-Selves-Walter-Peanut-Achmed-and-Me-by-Jeff-Dunham.pdf
    • http://muicuiu.dumb1.com/1a01a06a05a03a00a04/Bible-Sisters-A-Year-of-Devotions-with-the-Women-of-the-Bible-by-Gennifer-Benjamin-Brooks.pdf
    • http://muicuiu.dumb1.com/3a04a03a01a06a08/Holy-Bible-One-Year-Bible-New-Living-Translation-Compact-Edition-by-Anonymous.pdf
    • http://muicuiu.dumb1.com/1a00a02a02a08a03/Discovering-the-Bible-Your-Daily-Bible-Reading-Companion-by-Gordon-Addington.pdf
    • http://muicuiu.dumb1.com/1a00a01a06a04a04/Step-Into-the-Bible-100-Bible-Stories-for-Family-Devotions-by-Ruth-Graham.pdf
    • http://muicuiu.dumb1.com/1a00a01a02a04a06a03/Holy-Bible-ReaLife-Devotional-Bible-for-Kids-New-International-Version-Pink-by-Anonymous.pdf
    • http://muicuiu.dumb1.com/4a02a09a03a03a08/The-Bible-s-Cutting-Room-Floor-The-Holy-Scriptures-Missing-from-Your-Bible-by-Joel-M-Hoffman.pdf
    • http://muicuiu.dumb1.com/1a08a09a08a04a05/How-to-Read-the-Bible-for-All-Its-Worth-A-Guide-to-Understanding-the-Bible-by-Gordon-D-Fee.pdf
    • http://muicuiu.dumb1.com/4a01a03a04a05/Holy-Bible-Inspired-By-The-Bible-Experience-New-Testament-by-Anonymous.pdf
    • http://muicuiu.dumb1.com/6a05a09a06a07a05/Holy-Bible-The-Bible-Jesus-Read-by-Anonymous.pdf
    • http://muicuiu.dumb1.com/9a09a06a02a05/The-Message-Bible-Complete-Bible-by-Anonymous.pdf