Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4ec43fc117db387…

MALICIOUS

PDF

22.3 KB Created: 2019-04-29 22:55:45 +01:00 Authoring application: mPDF 5.7
MD5: 7df5fb79f12f19d577b9374e43174026 SHA-1: effa38f326b24053085d336dd5504607e73c4a11 SHA-256: f4ec43fc117db38746fa0bc5d058cb599ac2462a956866c286a33ac2ebd5e835
60 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, identified as a 'PDF_SEO_LINK_FARM' heuristic. These links point to academic-sounding documents hosted on a dynamic DNS domain, suggesting a tactic to manipulate search engine results or distribute malicious content. While the document body is heavily obfuscated, the presence of numerous external links is the primary indicator of malicious intent. No scripts were extracted from this sample.

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://loaminoo.linkpc.net/1090094093090093095/Case-Studies-in-Immunology-Fifth-Edition-Mhc-Class-II-Deficiency-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093091093098/Case-Studies-in-Immunology-Fifth-Edition-Factor-I-Deficiency-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093091099096/Case-Studies-in-Immunology-Fifth-Edition-Leukocyte-Adhesion-Deficiency-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093090090090/Case-Studies-in-Immunology-Acquired-Immune-Deficiency-Syndrome-A-Clinical-Companion-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093092090093/Case-Studies-in-Immunology-Fifth-Edition-Myasthenia-Gravis-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093091094096/Case-Studies-in-Immunology-Fifth-Edition-Congenital-Asplenia-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093092090097/Case-Studies-in-Immunology-Fifth-Edition-Multiple-Myeloma-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093090092098/Case-Studies-in-Immunology-Fifth-Edition-Mixed-Essential-Cryoglobulinemia-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093092091092/Case-Studies-in-Immunology-Fifth-Edition-X-Linked-Hyper-Igm-Syndrome-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093092090094/Case-Studies-in-Immunology-Fifth-Edition-Autoimmune-Hemolytic-Anemia-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093091094092/Case-Studies-in-Immunology-Fifth-Edition-Acute-Infectious-Mononucleosis-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093090094095/Case-Studies-in-Immunology-Fifth-Edition-Toxic-Shock-Syndrome-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093090094090/Case-Studies-in-Immunology-Fifth-Edition-Hereditary-Periodic-Fever-Syndromes-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093090093090/Case-Studies-in-Immunology-Fifth-Edition-Graft-Versus-Host-Disease-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1090094093091094091/Case-Studies-in-Immunology-Hereditary-Angioneurotic-Edema-A-Clinical-Companion-by-Raif-Geha.pdf
    • http://loaminoo.linkpc.net/1091090091098098093/Military-Intervenes-The-Case-Studies-in-Political-Development-Case-Studies-in-Political-Development-by-Henry-Bienen.pdf
    • http://loaminoo.linkpc.net/1090093094099094091/Theological-Encounters-at-a-Crossroads-An-Edition-and-Translation-of-Judah-Hadassi-s-Eshkol-Ha-Kofer-First-Commandment-and-Studies-of-the-Book-s-Judaeo-Arabic-and-Byzantine-Contexts-Karaite-Texts-and-Studies-Volume-11-by-Daniel-Lasker.pdf
    • http://loaminoo.linkpc.net/2098098096090090/The-Facts-of-the-M-Vademar-Case-La-Verite-Sur-Le-Cas-de-M-Valdemar-Bilingual-Edition-Edition-Bilingue-by-Edgar-Allan-Poe.pdf
    • http://loaminoo.linkpc.net/6095097099090095/Case-Studies-Art-in-a-Valise-by-Katonah-Museum-of-Art.pdf
    • http://loaminoo.linkpc.net/8097094091098094/Case-Studies-In-Environmental-Science-by-Robert-M-Schoch.pdf
    • http://loaminoo.linkpc.net/1090094093092091092/Case-Studies-in-Immunology-Fifth-Edition-X-Linked-Hyper-

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