Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c8ac8188c55927…

MALICIOUS

PDF

18.4 KB Created: 2019-04-30 02:36:55 +01:00 Authoring application: mPDF 5.7
MD5: 70f2d8a924e26f2f2b9aaeab3e277fed SHA-1: 29b7be9cc488bee54df736557d081fd506d02ffa SHA-256: b0c8ac8188c55927a2b3204532bbaabfa6215b94f74075d2cd8f68327c3f7e2c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the document body is heavily corrupted, the presence of numerous links suggests a malicious intent, possibly for SEO manipulation or to redirect users to phishing or malware distribution sites. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/4a03a03a05a01/Dead-City-Dead-City-1-by-James-Ponti.pdf
    • http://muicuiu.dumb1.com/3a06a01a02a08a05/Dead-City-by-J-J-Zep.pdf
    • http://muicuiu.dumb1.com/4a06a07a09a09a05/City-of-the-Dead-Desolace-4-by-Lucian-Barnes.pdf
    • http://muicuiu.dumb1.com/1a05a02a08a07a07/The-City-of-the-Dead-Chronicles-of-Aesirium-3-by-Ren-Cummins.pdf
    • http://muicuiu.dumb1.com/2a08a02a05a02a01/Beautiful-City-of-the-Dead-by-Leander-Watts.pdf
    • http://muicuiu.dumb1.com/1a05a06a04a04a01/City-of-the-Dead-Resident-Evil-3-by-S-D-Perry.pdf
    • http://muicuiu.dumb1.com/2a00a06a02a05a07/Vampires-Never-Cry-Wolf-Dead-in-the-City-3-by-Sara-Humphreys.pdf
    • http://muicuiu.dumb1.com/2a02a01a01a00a00/Another-Kind-of-Dead-Dreg-City-3-by-Kelly-Meding.pdf
    • http://muicuiu.dumb1.com/3a06a07a00a01a08/The-Night-Before-Dead-Dreg-City-6-by-Kelly-Meding.pdf
    • http://muicuiu.dumb1.com/4a02a04a05a04a02/Another-Kind-of-Dead-Dreg-City-3-by-Kelly-Meding.pdf
    • http://muicuiu.dumb1.com/1a09a06a00a08a00/Three-Days-to-Dead-Dreg-City-1-by-Kelly-Meding.pdf
    • http://muicuiu.dumb1.com/4a00a07a00a07a02/Rend-Washington-Dead-City-Book-2-by-Brian-Parker.pdf
    • http://muicuiu.dumb1.com/2a05a06a06a02a04/Strumpet-City-One-City-One-Book-Edition-by-James-Plunkett.pdf
    • http://muicuiu.dumb1.com/7a00a06a02a08a05/Die-Tote-Stadt-the-Dead-City-Opera-in-Three-Acts-Founded-on-G-Rodenbach-s-Das-Trugbild-1921-by-Paul-Schott.pdf
    • http://muicuiu.dumb1.com/4a02a09a05a08a03/True-Blood-Omnibus-2-Dead-to-the-World-Dead-as-a-Doornail-Definitely-Dead-Sookie-Stackhouse-4-6-by-Charlaine-Harris.pdf
    • http://muicuiu.dumb1.com/5a05a04a01a02a01/Fictional-City-States-Laputa-Baldur-s-Gate-Gaia-Mega-City-One-Ankh-Morpork-New-Crobuzon-Themyscira-Free-City-of-Greyhawk-Sanctaphrax-by-Source-Wikipedia.pdf
    • http://muicuiu.dumb1.com/2a09a00a01a02a07/City-of-the-dead-a-Claire-DeWitt-mystery-Claire-DeWitt-Mysteries-1-by-Sara-Gran.pdf
    • http://muicuiu.dumb1.com/3a06a06a07a00a07/Claire-DeWitt-and-the-City-of-the-Dead-Claire-DeWitt-Mysteries-1-by-Sara-Gran.pdf
    • http://muicuiu.dumb1.com/1a01a09a02a09a08a05/The-City-as-Interface-How-Digital-Media-Are-Changing-the-City-by-Martijn-de-Waal.pdf
    • http://muicuiu.dumb1.com/8a01a09a03a06a09/The-City-and-the-City-by-China-Mi-ville-l-Summary-amp-Study-Guide-by-BookRags.pdf
    • http://muicuiu.dumb1.com/4a02a04a05a04a02/Another-Kind-of

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