Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2bc7f15b3a7f950…

MALICIOUS

PDF

18.9 KB Created: 2019-11-08 00:29:28 +00:00 Authoring application: mPDF 5.7
MD5: 0baa49971ca4416ae0d2d39fb2cfb5e8 SHA-1: 748278e22b2a4423d612c39733ee92573b4d26f7 SHA-256: d2bc7f15b3a7f950de0f771c8b9b91caa0b055b3c72c1aefb6ae34496b72de1f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm with 24 external links, primarily using numeric slugs, designed to drive traffic to various websites. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves directing users to a large number of external URLs, likely for SEO manipulation or to host malicious content.

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://cefasfese.4pu.com/4731732736734731/Lena-s-Security-Day-2-by-B-S-M-Stoneking.pdf
    • http://cefasfese.4pu.com/9731736735732/Lena-A-Personal-and-Professional-Biography-of-Lena-Horne-by-James-Haskins.pdf
    • http://cefasfese.4pu.com/7733737730734739/Der-Fremde-in-meinem-Appartement-Eine-Story-von-Lena-Nitro-by-Lena-Nitro.pdf
    • http://cefasfese.4pu.com/1733733736738732/The-Diary-of-Lena-Mukhina-A-Girl-s-Life-in-the-Siege-of-Leningrad-by-Lena-Mukhina.pdf
    • http://cefasfese.4pu.com/7736737738732735/Embedded-Java-Security-Security-for-Mobile-Devices-by-Mourad-Debbabi.pdf
    • http://cefasfese.4pu.com/7734735737732731/Smart-Materials-for-Energy-Communications-and-Security-NATO-Science-for-Peace-and-Security-Series-by-Daoud-Mezzane.pdf
    • http://cefasfese.4pu.com/7739738731736733/Information-Security-Policies-Procedures-and-Standards-Guidelines-for-Effective-Information-Security-Management-by-Thomas-R-Peltier.pdf
    • http://cefasfese.4pu.com/7737730738735736/Network-Control-and-Engineering-for-Qos-Security-and-Mobility-II-Ifip-Tc6-Wg6-2-amp-Wg6-7-Second-International-Conference-on-Network-Control-and-Engineering-for-Qos-Security-and-Mobility-Net-Con-2003-October-13-15-2003-Muscat-Oman-by-Dominique-Ga-ti.pdf
    • http://cefasfese.4pu.com/2735730733730739/Because-You-Love-Me-by-Lena-Hart.pdf
    • http://cefasfese.4pu.com/2735730733730730/Because-You-Are-Mine-by-Lena-Hart.pdf
    • http://cefasfese.4pu.com/9730732734733/Witchlanders-by-Lena-Coakley.pdf
    • http://cefasfese.4pu.com/1730735730735732735/Die-Spionin-by-Lena-Morell.pdf
    • http://cefasfese.4pu.com/9730734731733730/Freiheit-by-Lena-H-sch.pdf
    • http://cefasfese.4pu.com/8737734738736733/Gay-Liebhaber-by-Lena-Ficka.pdf
    • http://cefasfese.4pu.com/3730730738736739/You-Can-Leave-Your-Hat-On-by-Lena-Matthews.pdf
    • http://cefasfese.4pu.com/2736737737734736/The-Bodyguard-by-Lena-Diaz.pdf
    • http://cefasfese.4pu.com/4735738730739732/Pieces-of-Me-by-Lena-Kovadlo.pdf
    • http://cefasfese.4pu.com/5731735739732/Special-Run-by-Lena-Jo-McCoy.pdf
    • http://cefasfese.4pu.com/2733739737732730/Aire-by-Lena-Goldfinch.pdf
    • http://cefasfese.4pu.com/9733732731734/Hochzeit-in-Jerusalem-by-Lena-Gorelik.pdf
    • http://cefasfese.4pu.com/7739738

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