Malicious PDF — malware analysis report

Static analysis result for SHA-256 b38eebfcd373a380…

MALICIOUS

PDF

18.5 KB Created: 2019-05-03 09:04:41 +01:00 Authoring application: mPDF 5.7
MD5: 5bd1a98871f8607a754c65408fa16282 SHA-1: 32be2acaaab69b1a147a325aa27bbe5b128a67d6 SHA-256: b38eebfcd373a38017f00cbdd1373de7e5da4f09fd9a3e85c402c2123c808dff
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a large number of embedded links to external PDF files, suggesting a link farm or distribution mechanism. While the document body is heavily obfuscated, the presence of numerous URLs points towards a malicious intent, likely related to SEO spam or distributing further malicious content. No scripts were extracted, limiting the analysis of specific behaviors.

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/9a07a03a00a01a01/Starcrossed-the-Complete-Series-Bad-Romeo-Broken-Juliet-Wicked-Heart-by-Leisa-Rayven.pdf
    • http://muicuiu.dumb1.com/6a06a07/Broken-Juliet-Starcrossed-2-by-Leisa-Rayven.pdf
    • http://muicuiu.dumb1.com/4a02a08a03a01a04/Broken-Juliet-Starcrossed-2-by-Leisa-Rayven.pdf
    • http://muicuiu.dumb1.com/3a03a00a01/Wicked-Heart-Starcrossed-3-by-Leisa-Rayven.pdf
    • http://muicuiu.dumb1.com/7a09a02a07a07a07/Bad-Romeo-Outtakes-Starcrossed-1-1-by-Leisa-Rayven.pdf
    • http://muicuiu.dumb1.com/7a09a02a07a00a09/Fakespeare-Starcrossed-in-Romeo-and-Juliet-by-M-E-Castle.pdf
    • http://muicuiu.dumb1.com/1a04a08a06a07a09/Wicked-The-Complete-Series-Wicked-1-4-by-Lily-Graison.pdf
    • http://muicuiu.dumb1.com/5a02a00a06a05/Wicked-Series-Complete-Box-Set-Wicked-1-3-by-M-S-Parker.pdf
    • http://muicuiu.dumb1.com/1a01a04a00a00a01a00/Hills-In-My-Heart-Brandings-of-a-Friendship-Series-Book-1-by-Leisa-Coffman.pdf
    • http://muicuiu.dumb1.com/8a06a02a01a03a06/Romeo-und-Julia-Romeo-and-Juliet-Zweisprachig-Englisch-Deutsch-ebook-Seite-f-r-Seite-Bilingual-English-German-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/7a05a00a02a07a08/Shakespeare-Erotic-Fantasy-Sex-Scenes-With-Nude-Photos-Books-From-The-7-Book-Series-For-Romeo-amp-Juliet-and-Mark-Anthony-amp-Cleopatra-Vampires-Fallen-Angels-Stance-Dr-Romance-Free-Love-Pen-Names-by-Cum-Stance.pdf
    • http://muicuiu.dumb1.com/1a01a05a05a03a06a07/Romeo-x-Juliet-Omnibus-by-COM.pdf
    • http://muicuiu.dumb1.com/7a09a02a07a07a06/Romeo-and-Juliet-by-Kenneth-Roy.pdf
    • http://muicuiu.dumb1.com/1a03a09a02a00/Romeo-and-Juliet--Together-and-Alive-at-Last-by-Avi.pdf
    • http://muicuiu.dumb1.com/6a06a09a00a06a01/Romeo-and-Juliet-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/9a06a09a02a01a07/Romeo-and-Juliet-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/7a00a03a08a02a05/Romeo-and-Juliet-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/8a02a07a00a01a07/Romeo-and-Juliet-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/6a09a00a02a03a09/Romeo-and-Juliet-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/9a00a05a00a07a05/Romeo-and-Juliet-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/8a06a02a01a03a06/Romeo-und-Julia-Romeo-and-Juliet-Zweisprachig-Englisch-Deutsch-ebook-Seite-f-r-Seite-Bilingual-English-German-by-W

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