Malicious PDF — malware analysis report

Static analysis result for SHA-256 b234efe4784c7e7e…

MALICIOUS

PDF

15.3 KB Created: 2019-05-02 07:50:05 +01:00 Authoring application: mPDF 5.7
MD5: 20010a715c0c5b73d5596f6f152cb7df SHA-1: 5b6e66606f5ff00f57e07798f8f7d44f809fca2a SHA-256: b234efe4784c7e7e201c1b134ba68bf08390458fec8dfaa8f52dc6a9028b93b1
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the specific URLs appear to link to book titles, the sheer volume and the ML classifier's high confidence score suggest a malicious intent, likely for SEO manipulation or to redirect users to malicious sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/9735730735732/Wicked-Fate-Wicked-1-by-Tabatha-Vargo.pdf
    • http://cefasfese.4pu.com/1731735736738730735/Sacked-by-Tabatha-Vargo.pdf
    • http://cefasfese.4pu.com/9739734738735730/Crave-Blood-amp-Breed-1-by-Tabatha-Vargo.pdf
    • http://cefasfese.4pu.com/4731739739737730/Vanilla-and-Vice-Empire-Sevens-1-by-Tabatha-Vargo.pdf
    • http://cefasfese.4pu.com/1732733733730732/On-the-Plus-Side-Chubby-Girl-Chronicles-1-by-Tabatha-Vargo.pdf
    • http://cefasfese.4pu.com/3734739739738735/The-Importance-of-Being-Wicked-Wicked-Family-Secrets-3-Millworth-Manor-2-by-Victoria-Alexander.pdf
    • http://cefasfese.4pu.com/3735737737730733/Wicked-The-Life-and-Times-of-the-Wicked-Witch-of-the-West-by-Gregory-Maguire.pdf
    • http://cefasfese.4pu.com/1734737732736738/Playing-Patience-Blow-Hole-Boys-1-by-Tabatha-Vargo.pdf
    • http://cefasfese.4pu.com/4734736737736737/Wicked-Indiscretions-Wicked-Affairs-Book-5-by-Eliza-Lloyd.pdf
    • http://cefasfese.4pu.com/2734737737732735/Love-and-Other-Wicked-Games-The-Wicked-Game-3-by-Olivia-Fuller.pdf
    • http://cefasfese.4pu.com/2739735731734732/Every-Witch-Way-But-Wicked-Wicked-Witches-of-the-Midwest-2-by-Amanda-M-Lee.pdf
    • http://cefasfese.4pu.com/4735735733732731/Wicked-Lies-Wicked-2-Colony-4-by-Lisa-Jackson.pdf
    • http://cefasfese.4pu.com/1733734733/Wicked-Fall-The-Wicked-Horse-1-by-Sawyer-Bennett.pdf
    • http://cefasfese.4pu.com/1736739737738736/Wicked-to-Love-Wicked-Lovers-5-5-by-Shayla-Black.pdf
    • http://cefasfese.4pu.com/1734735730730739/Wicked-All-the-Way-Wicked-Lovers-6-5-by-Shayla-Black.pdf
    • http://cefasfese.4pu.com/3731733731734731/Wicked-Hunger-SomeOne-Wicked-This-Way-Comes-1-by-DelSheree-Gladden.pdf
    • http://cefasfese.4pu.com/9735730731732/My-Wicked-Wicked-Ways-by-Errol-Flynn.pdf
    • http://cefasfese.4pu.com/2730732735733731/Wicked-Beautiful-Wicked-Games-1-by-J-T-Geissinger.pdf
    • http://cefasfese.4pu.com/3738736737738737/Wicked-for-You-Wicked-Lovers-10-by-Shayla-Black.pdf
    • http://cefasfese.4pu.com/3737732732/Wicked-Beautiful-Wicked-Games-1-by-J-T-Geissinger.pdf

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