Malicious PDF — malware analysis report

Static analysis result for SHA-256 f05efce137f99751…

MALICIOUS

PDF

21.9 KB Created: 2019-05-02 10:35:25 +01:00 Authoring application: mPDF 5.7
MD5: 4f6744564464a5809b1eb3b588694c96 SHA-1: 5dbba8a397d343ce76cca73ec8a4486a6ef1e2a8 SHA-256: f05efce137f9975148ccffb50a1a5315b0812ce239da110013965312da458e83
90 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which strongly suggests a link farm or redirection tactic. While the specific URLs themselves are marked as benign, the sheer volume and structure indicate an attempt to direct users to external, potentially malicious, content. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/3a08a01a08a00a03/The-Stainless-Steel-Rat-Saves-the-World-Stainless-Steel-Rat-6-by-Harry-Harrison.pdf
    • http://muicuiu.dumb1.com/1a08a07a03a01a03/The-Stainless-Steel-Rat-Sings-the-Blues-Stainless-Steel-Rat-3-by-Harry-Harrison.pdf
    • http://muicuiu.dumb1.com/4a01a01a04a02/The-Stainless-Steel-Rat-Stainless-Steel-Rat-4-by-Harry-Harrison.pdf
    • http://muicuiu.dumb1.com/2a09a00a05a01a07/Stainless-Mary-by-Kathleen-K-.pdf
    • http://muicuiu.dumb1.com/5a01a00a02a00a02/George-Henry-Thomas-As-True-as-Steel-by-Brian-Steel-Wills.pdf
    • http://muicuiu.dumb1.com/3a09a02a05a05a03/Tarnished-Steel-Steel-Riders-MC-1-by-Carmen-Faye.pdf
    • http://muicuiu.dumb1.com/3a05a09a08a02a08/Steel-Justice-Steel-Infidels-3-by-Dez-Burke.pdf
    • http://muicuiu.dumb1.com/8a00a08a07a02a07/The-Iron-and-Steel-Magazine-Vol-7-Successor-to-the-Metallographist-A-Monthly-Publication-Devoted-to-the-Iron-and-Steel-Industry-January-to-June-1904-by-Albert-Sauveur.pdf
    • http://muicuiu.dumb1.com/8a00a08a07a03a05/The-Iron-and-Steel-Magazine-Vol-10-Successor-to-the-Metallographist-a-Monthly-Publication-Devoted-to-the-Iron-and-Steel-Industry-July-to-December-1905-by-Albert-Sauveur.pdf
    • http://muicuiu.dumb1.com/5a05a03a01a05a05/Erection-and-Inspection-of-Iron-and-Steel-Constructions-Written-for-the-Use-of-Architects-Engineers-and-Builders-and-for-Civil-Service-Candidates-for-the-Position-of-Inspector-of-Iron-and-Steel-by-Lupescu-Morris-Bernfeld.pdf
    • http://muicuiu.dumb1.com/2a01a01a03a06a00/Wheels-of-Steel-Book-3-Wheels-of-Steel-3-by-Pepper-Pace.pdf
    • http://muicuiu.dumb1.com/3a03a04a03a05a08/Steel-World-Undying-Mercenaries-1-by-B-V-Larson.pdf
    • http://muicuiu.dumb1.com/6a00a03a09a01/Men-of-Steel-box-set-Men-of-Steel-0-5-5-by-M-J-Fields.pdf
    • http://muicuiu.dumb1.com/1a04a04a06a02a03/Men-of-Steel-Men-of-Steel-1-1-by-M-J-Fields.pdf
    • http://muicuiu.dumb1.com/4a04a07a08a03/The-Steel-Wave-World-War-II-1939-1945-2-by-Jeff-Shaara.pdf
    • http://muicuiu.dumb1.com/2a03a03a01a00a03/Plains-of-Sand-and-Steel-Uncommon-World-3-by-Alisha-Klapheke.pdf
    • http://muicuiu.dumb1.com/6a06a07a08a00a02/Les-Mutations-de-La-Siderurgie-Mondiale-Du-Xxe-Siecle-a-Nos-Jours---The-Transformation-of-the-World-Steel-Industry-from-the-Xxth-Century-to-the-Present-Les-by-Charles-Barthel.pdf
    • http://muicuiu.dumb1.com/8a00a00a03a01/Pia-Saves-the-Day-Elder-Races-6-6-by-Thea-Harrison.pdf
    • http://muicuiu.dumb1.com/4a00a09a01a03a08/H-R-H-by-Danielle-Steel.pdf
    • http://muicuiu.dumb1.com/3a07a09a09a01a02/Jase-Men-of-Steel-1-by-M-J-Fields.pdf