Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a09fbf38fdbc063…

MALICIOUS

PDF

21.8 KB Created: 2019-11-10 00:07:14 +00:00 Authoring application: mPDF 5.7
MD5: cc57a13cdd96f570103f297ffa77666e SHA-1: 62b675d8a6c51405e49b8daeefc1e3e4eb8a5ceb SHA-256: 9a09fbf38fdbc06349fbcf25eefc38156616153a9ea007a62990f0f21ecfbb4e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of external links, identified as a link farm, which is a common technique for SEO poisoning or distributing malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the sheer volume of links suggests an attempt to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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://cefasfese.4pu.com/9738735732739737/Dubliners-by-James-Joyce-Illustrated-Delphi-Parts-Edition-James-Joyce-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/7737735734731733/Dubliners-1917-by-James-Joyce-Collection-of-15-Short-Stories-Include-A-Portrait-of-the-Artist-as-a-Young-Man-1916-Novel-By-James-Joyce-Represents-the-Transitional-Stage-Between-the-Realism-of-Joyce-s-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/6735732733739734/Dubliners-by-James-Joyce-Unabridged-1914-Original-Version-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/5739730736737736/A-Portrait-of-the-Artist-as-a-Young-Man-1916-by-James-Joyce-A-Portrait-of-the-Artist-as-a-Young-Man-Is-a-Coming-of-Age-Tale-by-James-Joyce-First-Serialized-in-the-Egoist-Between-1914-1915-and-Published-in-Book-Form-in-1916-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/6738730734738/Dubliners-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/1730733731730732737/Dubliners-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/3734731736730735/Dubliners-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/3732733733739735/Dubliners-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/1730734739736732733/Dubliners-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/1733738731735731/Dubliners-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/6736732738735737/Dubliners-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/6739739732736732/Dubliners-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/3733732738733736/Dubliners-Part-II-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/9738735734731739/The-Turn-of-the-Screw-by-Henry-James-Illustrated-Delphi-Parts-Edition-Henry-James-by-Henry-James.pdf
    • http://cefasfese.4pu.com/1738735736734738/The-Dead-and-Other-Stories-from-Dubliners-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/1730734731738739731/ULYSSES-Optimized-for-ebook-Illustrated-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/8730732739738738/Ulysses-Color-Illustrated-Formatted-for-E-Readers-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/8734731730730733/A-Portrait-of-the-Artist-as-a-Young-Man---The-Original-Book-Edition-of-1916-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/3735739732738732/Ulysses-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/3735731735733730/Ulysses-by-James-Joyce.pdf
    • http://cefasfese.4pu.com/5739730736737736/A

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