Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb3fabab1021ccd…

MALICIOUS

PDF

15.8 KB Created: 2019-05-01 05:15:37 +01:00 Authoring application: mPDF 5.7
MD5: 778e6c333417f80e628ee97d12b82fc8 SHA-1: abcaf9c02d8ffebfdafdad7eb51f003d6a96e81d SHA-256: 8fb3fabab1021ccd24efaeb14f64f36af02e6ea43e27dc2e5c8bd45d34194c2b
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified as a link farm. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the structure and embedded URLs suggest the document is designed to redirect users to potentially malicious content or for SEO manipulation. The primary attack pattern involves leveraging a link farm to distribute or obscure malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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/6a09a05a06a03/13-Little-Blue-Envelopes-Little-Blue-Envelope-1-by-Maureen-Johnson.pdf
    • http://muicuiu.dumb1.com/4a06a02a09a09a07/13-Little-Blue-Envelopes-Little-Blue-Envelope-1-by-Maureen-Johnson.pdf
    • http://muicuiu.dumb1.com/3a03a04a09a03a06/The-Last-Little-Blue-Envelope-Little-Blue-Envelope-2-by-Maureen-Johnson.pdf
    • http://muicuiu.dumb1.com/5a08a02a09a03/The-Last-Little-Blue-Envelope-by-Maureen-Johnson.pdf
    • http://muicuiu.dumb1.com/1a04a08a00a01/This-Blue-Poems-by-Maureen-N-McLane.pdf
    • http://muicuiu.dumb1.com/3a06a03a03a00a09/A-Prince-Among-Men-Red-Hot-amp-Blue-9-by-Cat-Johnson.pdf
    • http://muicuiu.dumb1.com/2a00a06a05a02a09/Trey-Red-Hot-amp-Blue-1-by-Cat-Johnson.pdf
    • http://muicuiu.dumb1.com/1a04a07a09a03a03/Model-Soldier-Red-Hot-amp-Blue-8-by-Cat-Johnson.pdf
    • http://muicuiu.dumb1.com/3a04a07a08a05a00/Smalltown-Heat-Red-Hot-amp-Blue-4-6-by-Cat-Johnson.pdf
    • http://muicuiu.dumb1.com/3a09a07a08a08a01/The-Blue-Alien-s-Mate-Royally-Blue-1-Celestial-Mates-by-Zara-Zenia.pdf
    • http://muicuiu.dumb1.com/2a05a03a08a08a06/Blue-Gets-His-Magic-Collar-The-Adventures-of-Blue-the-Very-Happy-Dog-1-by-Ronnie-James.pdf
    • http://muicuiu.dumb1.com/4a07a02a02a09a02/Blue-Paramour-The-Blue-Ridge-Saga-1-by-Louise-Ligon.pdf
    • http://muicuiu.dumb1.com/3a08a03a00a01a08/Threads-of-Blue-Beautiful-Blue-World-2-by-Suzanne-LaFleur.pdf
    • http://muicuiu.dumb1.com/3a03a02a09a05a02/Symphony-in-Blue-Blue-Notes-4-5-by-Shira-Anthony.pdf
    • http://muicuiu.dumb1.com/8a04a02a07a02/Blue-Blue-Sea-Finds-His-Cape-by-Miranda-N-Prather.pdf
    • http://muicuiu.dumb1.com/3a05a00a07a03a03/Blue-Midnight-Blue-Mountain-1-by-Tess-Thompson.pdf
    • http://muicuiu.dumb1.com/2a05a00a00a08a00/Bluest-of-Blue-dirtysexygeeks-3-by-Melissa-Blue.pdf
    • http://muicuiu.dumb1.com/5a02a02a00a08a00/Blue-on-Blue-Ground-by-Aaron-Smith.pdf
    • http://muicuiu.dumb1.com/4a08a01a08a08a08/A-Blue-So-Blue-by-Jean-Fran-ois-Dumont.pdf
    • http://muicuiu.dumb1.com/1a04a08a06a02a01/Deep-Blue-Blue-1-by-Jules-Barnard.pdf
    • http://muicuiu.dumb1.com/2a05a03a08a08a0

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