Malicious PDF — malware analysis report

Static analysis result for SHA-256 c95db018c3e4e2e0…

MALICIOUS

PDF

17.7 KB Created: 2019-04-30 17:25:48 +01:00 Authoring application: mPDF 5.7
MD5: b290b56c8514f0ee51d084bc176d45d5 SHA-1: a1b737edcf8560bed7eed3ecadbd76a09776f9a6 SHA-256: c95db018c3e4e2e0115c2f7cda13df5328fc3cd75db5285083c32d8879a188de
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the suspicious link structure. While no scripts were extracted, the sheer volume of links and the suspicious domain suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/3090094090099091/A-Fan-s-Notes-by-Frederick-Exley.pdf
    • http://loaminoo.linkpc.net/6099098099098091/Frederick-s-Journey-The-Life-of-Frederick-Douglass-by-Doreen-Rappaport.pdf
    • http://loaminoo.linkpc.net/1090093097099096094/Exley-by-Brock-Clarke.pdf
    • http://loaminoo.linkpc.net/1090096097097090/Obsidian-Eyes-by-A-W-Exley.pdf
    • http://loaminoo.linkpc.net/1093093095090099/Obsidian-Eyes-by-A-W-Exley.pdf
    • http://loaminoo.linkpc.net/3090093092097093/Prince-of-Dorkness-More-Notes-from-a-Totally-Lame-Vampire-Notes-2-by-Tim-Collins.pdf
    • http://loaminoo.linkpc.net/9099099094094096/Notes-from-Hampstead-The-Writer-s-Notes-1954-1971-by-Elias-Canetti.pdf
    • http://loaminoo.linkpc.net/9094091099091094/Notes-on-a-Rebellion-Notes-from-Random-Knight-1-by-Valentina-Hepburn.pdf
    • http://loaminoo.linkpc.net/1092095096091098/Notes-on-a-Rebellion-Notes-from-Random-Knight-1-by-Valentina-Hepburn.pdf
    • http://loaminoo.linkpc.net/3095096092093092/The-Artifact-Hunters-Boxed-Set-by-A-W-Exley.pdf
    • http://loaminoo.linkpc.net/5095090090096091/Narrative-of-the-Life-of-Frederick-Douglass-with-Cherokee-Removal-amp-Great-Awakening-by-Frederick-Douglass.pdf
    • http://loaminoo.linkpc.net/8099094097095091/Nero-s-Fiddle-The-Artifact-Hunters-3-by-A-W-Exley.pdf
    • http://loaminoo.linkpc.net/1093094092096096/The-Unicorn-s-Tail-Artifact-Hunters-2-5-by-A-W-Exley.pdf
    • http://loaminoo.linkpc.net/1093093096096092/Moseh-s-Staff-Artifact-Hunters-4-by-A-W-Exley.pdf
    • http://loaminoo.linkpc.net/1090094092090095099/Narrative-of-the-Life-of-Frederick-Douglass-an-American-Slave-with-eBook-by-Frederick-Douglass.pdf
    • http://loaminoo.linkpc.net/4090091092095099/Narrative-of-the-Life-of-Frederick-Douglass-An-American-Slave-and-Essays-by-Frederick-Douglass.pdf
    • http://loaminoo.linkpc.net/2090099099092092/Happy-Birthday-You-Poor-Old-Wreck-by-Helen-Exley.pdf
    • http://loaminoo.linkpc.net/3090093093097099/My-Daughter-My-Joy-The-Greatest-Tributes-to-Daughters-That-Have-Ever-Been-Written-by-Helen-Exley.pdf
    • http://loaminoo.linkpc.net/6090091091095096/Narrative-of-the-Life-of-Frederick-Douglass-and-American-Slave-by-Frederick-Douglass.pdf
    • http://loaminoo.linkpc.net/2097091095091095/Narrative-of-the-Life-of-Frederick-Douglass-an-American-Slave-by-Frederick-Douglass.pdf
    • http://loaminoo.linkpc.net/5095090090096091/Narrative-of-the-Life-of-Frederick

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