Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb338adce68f0737…

MALICIOUS

PDF

17.7 KB Created: 2019-05-04 14:29:48 +01:00 Authoring application: mPDF 5.7
MD5: 01a87af729f50590b57ab17054558b08 SHA-1: 9deee47b87d3d43577c215f038b74e049a7a9fff SHA-256: cb338adce68f0737c732aaa550b03888272ef3975a3ea114911fa92ff2d4012f
90 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, identified as a link farm. The ML classifier strongly indicated maliciousness. The primary attack pattern involves directing users to numerous external PDF files hosted on 'loaminoo.linkpc.net'. The exact purpose of these links is unclear, but it is likely for SEO manipulation or to serve as a distribution point for further malicious 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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