Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f1bdd3c1ea391b1…

MALICIOUS

PDF

21.5 KB Created: 2019-05-02 01:22:43 +01:00 Authoring application: mPDF 5.7
MD5: ffba0a0eea22030ee5484edcc7b94e42 SHA-1: a96e77ae449e0b1900fa78cf45fc8206a66da05a SHA-256: 9f1bdd3c1ea391b17354e1610fb42f553e40083a7af725bf6f3369cf4971a3af
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged by a machine learning classifier and contains a large number of embedded links to external PDF documents. This suggests a link farm or SEO poisoning attack. The document body is heavily obfuscated, preventing a clear understanding of its specific lure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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/5a06a05a01a09a01/Edmond-Hamilton-Resurrected-Classic-Stories-of-Edmond-Hamilton-by-Edmond-Hamilton.pdf
    • http://muicuiu.dumb1.com/4a06a05a09a02a07/The-Weapon-from-Beyond-Starwolf-1-by-Edmond-Hamilton.pdf
    • http://muicuiu.dumb1.com/5a06a05a02a07a02/World-Of-The-Starwolves-Starwolf-3-by-Edmond-Hamilton.pdf
    • http://muicuiu.dumb1.com/1a05a04a07a07a04/City-At-World-s-End-Crest-Sf-S494-by-Edmond-Hamilton.pdf
    • http://muicuiu.dumb1.com/2a07a05a00a09/Clash-of-Star-Kings-by-Avram-Davidson.pdf
    • http://muicuiu.dumb1.com/4a03a06a00a03a04/The-Star-of-Eldon-World-of-Samar-3-by-M-L-Hamilton.pdf
    • http://muicuiu.dumb1.com/8a02a08a03a03a07/Cyrano-de-Bergerac-A-Heroic-Comedy-from-the-French-of-Edmond-Rostand-Done-Into-English-Verse-by-Edmond-Rostand.pdf
    • http://muicuiu.dumb1.com/6a06a02a04a07a06/Plays-of-Edmond-Rostand-Volume-1-by-Edmond-Rostand.pdf
    • http://muicuiu.dumb1.com/2a03a07a09a02a08/The-Death-of-Kings-A-Medical-History-of-the-Kings-and-Queens-of-England-by-Clifford-Brewer.pdf
    • http://muicuiu.dumb1.com/2a00a01a04a09a07/Three-Kings-One-Night-Lost-Kings-MC-2-5-by-Autumn-Jones-Lake.pdf
    • http://muicuiu.dumb1.com/5a09a07a08a06/Gods-and-Kings-Chronicles-of-the-Kings-1-by-Lynn-Austin.pdf
    • http://muicuiu.dumb1.com/6a06a02a04a06a07/Plays-of-Edmond-Rostand-by-Edmond-Rostand.pdf
    • http://muicuiu.dumb1.com/6a06a02a05a06a01/Plays-of-Edmond-Rostand-Vol-1-by-Edmond-Rostand.pdf
    • http://muicuiu.dumb1.com/7a00a09a08a01a09/Mrs-Alexander-Hamilton-Witness-That-George-Washington-Was-a-Communicant-of-the-Church-by-Elizabeth-Hamilton.pdf
    • http://muicuiu.dumb1.com/5a01a05a01a08/The-Sport-of-Kings-and-the-Kings-of-Crime-Horse-Racing-Politics-and-Organized-Crime-in-New-York-1865-1913-by-Steven-A-Riess.pdf
    • http://muicuiu.dumb1.com/6a05a07a09a09/Star-by-Star-Star-Wars-The-New-Jedi-Order-9-by-Troy-Denning.pdf
    • http://muicuiu.dumb1.com/9a09a05a01a06a03/The-Papers-of-Alexander-Hamilton-Additional-Letters-1777-1802-and-Cumulative-Index-Volumes-I-XXVII-by-Alexander-Hamilton.pdf
    • http://muicuiu.dumb1.com/4a04a02a07a02a01/Laurell-K-Hamilton-s-Anita-Blake-Vampire-Hunter-The-Laughing-Corpse-Volume-1-Animator-by-Laurell-K-Hamilton.pdf
    • http://muicuiu.dumb1.com/7a08a09a03a07a08/Laurell-K-Hamilton-s-Anita-Blake-Vampire-Hunter---The-First-Death-2-by-Laurell-K-Hamilton.pdf
    • http://muicuiu.dumb1.com/1a00a09a05a01a07a02/Kin-of-Kings-The-Kin-of-Kings-1-by-B-T-Narro.pdf
    • http://muicuiu.dumb1.com/8a02a08a03a03a07/Cyrano-de-Bergerac-A-Heroic-Comedy-from-the-French-of-Edmond-Rostand-D

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