Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1a606891a348b5e…

MALICIOUS

PDF

13.5 KB Created: 2019-04-30 18:56:36 +01:00 Authoring application: mPDF 5.7
MD5: a02261e301b6045f36fea7ef8382ad96 SHA-1: e2a8c906cadafdbadf13c43849148bde5da5e7e7 SHA-256: f1a606891a348b5e48b88823587845f8b47020e7bf9622a89117406d239c7f25
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, hosted on the domain 'muicuiu.dumb1.com'. This technique is often used to distribute malware or phish for credentials by overwhelming the user with seemingly legitimate but ultimately malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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/1a03a06a03a02/Joey-Pigza-Swallowed-the-Key-Joey-Pigza-1-by-Jack-Gantos.pdf
    • http://muicuiu.dumb1.com/1a03a05a05a04/Joey-Pigza-Loses-Control-Joey-Pigza-2-by-Jack-Gantos.pdf
    • http://muicuiu.dumb1.com/2a00a08a05a02a07/Heads-or-Tails-Stories-from-the-Sixth-Grade-Jack-Henry-1-by-Jack-Gantos.pdf
    • http://muicuiu.dumb1.com/1a01a05a01a02a05a02/Something-for-Joey-by-Richard-E-Peck.pdf
    • http://muicuiu.dumb1.com/1a01a05a01a04a03a04/Joey-by-Donald-Goddard.pdf
    • http://muicuiu.dumb1.com/1a01a05a01a02a07a08/Looking-After-Joey-by-David-Pratt.pdf
    • http://muicuiu.dumb1.com/1a01a05a01a03a01a00/Joey-To-The-World-by-Flesa-Black.pdf
    • http://muicuiu.dumb1.com/2a01a02a02a05a01/Bravest-Warriors-Vol-1-by-Joey-Comeau.pdf
    • http://muicuiu.dumb1.com/3a01a06a03a01a06/Bravest-Warriors-1-by-Joey-Comeau.pdf
    • http://muicuiu.dumb1.com/6a05a05a05a08/One-Bloody-Thing-After-Another-by-Joey-Comeau.pdf
    • http://muicuiu.dumb1.com/2a01a02a04a06a00/Bravest-Warriors-2-by-Joey-Comeau.pdf
    • http://muicuiu.dumb1.com/1a08a09a07a04a09/No-Axe-Too-Small-to-Grind-by-Joey-Slinger.pdf
    • http://muicuiu.dumb1.com/4a01a03a00a09a04/Holding-the-Cards-by-Joey-W-Hill.pdf
    • http://muicuiu.dumb1.com/1a01a05a01a03a01a01/Naptime-with-Joey-by-Laura-Izumikawa.pdf
    • http://muicuiu.dumb1.com/8a02a02a02a08a07/Lynne-amp-Hope-by-Joey-Paul.pdf
    • http://muicuiu.dumb1.com/3a04a07a07a02a03/One-Two-Three-Shatter-Xander-1-by-Joey-James-Hook.pdf
    • http://muicuiu.dumb1.com/2a05a09a09a08a03/Bound-to-Please-Naughty-Bits-3-by-Joey-W-Hill.pdf
    • http://muicuiu.dumb1.com/5a01a00a09a08/The-App-of-Time-Travel-Series-1-of-5-by-Joey-Wargachuk.pdf
    • http://muicuiu.dumb1.com/1a01a05a01a03a00a08/A-Song-for-Joey-by-Elizabeth-Audrey-Mills.pdf
    • http://muicuiu.dumb1.com/3a08a04a06a00a01/Natural-Law-Nature-of-Desire-2-by-Joey-W-Hill.pdf

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