Malicious PDF — malware analysis report

Static analysis result for SHA-256 f56757df9cb3f0d1…

MALICIOUS

PDF

22.3 KB Created: 2019-05-05 16:24:31 +01:00 Authoring application: mPDF 5.7
MD5: 9e8154ec4134c702740b6a508c260bfe SHA-1: 4ed705754d43139bd4e71c10009ad4c13cf1787c SHA-256: f56757df9cb3f0d15da2229039dd63572805fa69c16e25c43847447b245ecd28
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged as malicious by an ML classifier and contains a large number of external links, many of which point to book titles. The heuristic PDF_SEO_LINK_FARM indicates that the PDF is designed to host a link farm, likely for SEO poisoning or to distribute further malicious content. While the specific intent of the linked PDFs is unclear, the sheer volume and nature of the links suggest a malicious distribution scheme rather than legitimate content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9784

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/4a00a00a06a06a09/Mistletoe-Kisses-A-Soldier-s-Tale-A-Winter-Night-s-Tale-A-Twelfth-Night-Tale-Harlequin-Historical-Series-by-Elizabeth-Rolls.pdf
    • http://muicuiu.dumb1.com/3a07a03a04a01a09/A-Regency-Christmas-A-Soldier-s-Tale-A-Winter-Night-s-Tale-A-Twelfth-Night-Tale-by-Diane-Gaston.pdf
    • http://muicuiu.dumb1.com/8a03a06a00a07a01/One-Night-with-the-Chauffeur-An-Erotic-Tale-by-Emma-Barnes.pdf
    • http://muicuiu.dumb1.com/4a07a06a05a06a03/The-Man-Who-Heard-Voices-Or-How-M-Night-Shyamalan-Risked-His-Career-on-a-Fairy-Tale-by-Michael-Bamberger.pdf
    • http://muicuiu.dumb1.com/1a00a00a08a04a09a04/Kirstie-s-Tale---The-Box-Set-A-Tale-of-BDSM-Erotic-Romance-by-Simone-Leigh.pdf
    • http://muicuiu.dumb1.com/7a08a00a01a01a02/Kavanagh-A-Tale-and-Evangeline-a-Tale-of-Acadie-by-Henry-Wadsworth-Longfellow.pdf
    • http://muicuiu.dumb1.com/7a08a00a01a01a00/Kavanagh-a-Tale-and-Evangeline-a-Tale-of-Acadie-by-Henry-Wadsworth-Longfellow.pdf
    • http://muicuiu.dumb1.com/5a06a08a05a06a02/Exploring-Beedle-the-Bard-Unauthorized-Pithy-Tale-By-Tale-Perspectives-by-Graeme-Davis.pdf
    • http://muicuiu.dumb1.com/5a02a01a06a00a00/A-Tale-of-Oak-and-Mistletoe-Time-Walkers-4-by-E-B-Brown.pdf
    • http://muicuiu.dumb1.com/1a00a00a08a04a09a03/A-Dream-of-White-Horses-A-Steamy-Tale-of-Romance-and-the-Meeting-of-Strangers-Kirstie-s-Tale-Book-1-by-Simone-Leigh.pdf
    • http://muicuiu.dumb1.com/6a04a01a00a00/A-Soldier-s-Tale-by-M-K-Joseph.pdf
    • http://muicuiu.dumb1.com/3a07a03a00a07a02/Snowbound-Wedding-Wishes-An-Earl-Beneath-the-Mistletoe-Twelfth-Night-Proposal-Christmas-at-Oakhurst-Manor-by-Louise-Allen.pdf
    • http://muicuiu.dumb1.com/1a04a09a05a06a06/Galiene-A-Twelfth-Century-Tale-of-Love-and-War-The-Butterfly-Chronicles-Book-1-by-Dawn-Hammill.pdf
    • http://muicuiu.dumb1.com/3a07a03a00a05a02/Moonlight-and-Mistletoe-Harlequin-Historical-830-by-Louise-Allen.pdf
    • http://muicuiu.dumb1.com/7a01a01a09a06/The-Winter-s-Tale-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/3a05a09a04a02a04/Winter-s-Tale-by-Mark-Helprin.pdf
    • http://muicuiu.dumb1.com/1a07a05a02a05a03/Winter-s-Tale-by-Mark-Helprin.pdf
    • http://muicuiu.dumb1.com/8a08a08a09a06a08/The-Winter-s-Tale-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/8a00a08a08a04a03/The-Winter-s-Tale-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/4a04a06a07a00a08/A-Winter-s-Tale-by-Trisha-Ashley.pdf
    • http://muicuiu.dumb1.com/1a00a00a08a04a09

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