Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b2b615b65aa271b…

MALICIOUS

PDF

22.7 KB Created: 2019-04-30 04:24:11 +01:00 Authoring application: mPDF 5.7
MD5: 1a6e0ba54329c7a1f9b4670493955d33 SHA-1: 547d65cdb6daa027be218a4ccd5fad8cfc4d7197 SHA-256: 6b2b615b65aa271b6943c3858147b43d0efbb16f821d349e59eb97bda361b2aa
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm, suggesting a deceptive tactic to redirect users. The heuristic 'SE_DOWNLOAD_BUTTON' indicates the presence of visual download lures, reinforcing the idea that the document is designed to trick users into clicking these links. While no scripts were explicitly extracted, the nature of the link farm and the ML classification strongly suggest malicious intent, likely to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/1a01a07a02a03a07/Coming-Of-Age-A-Decade-Of-Essays-2001-2011-by-Nik-Nazmi-Nik-Ahmad.pdf
    • http://muicuiu.dumb1.com/4a04a01a04a08a03/Nos-vemos-en-el-ba-o-Renacimiento-y-rock-and-roll-en-Nueva-York-2001-2011-by-Lizzy-Goodman.pdf
    • http://muicuiu.dumb1.com/6a06a04a08a05/Earth-Fire-and-Air-Essays-of-a-Decade-by-Sylvia-L-Mayuga.pdf
    • http://muicuiu.dumb1.com/1a00a07a01a03a01a00/Esel-2011-Donkeys-2011-nes-2011-by-Hans-Reinhard.pdf
    • http://muicuiu.dumb1.com/1a00a08a03a03a06a00/The-Greatest-Salesman-in-the-World-2001-2001-Gift-Edition-by-Og-Mandino.pdf
    • http://muicuiu.dumb1.com/4a07a06a06a04a00/Coming-Out-Like-a-Porn-Star-Essays-on-Pornography-Protection-and-Privacy-by-Jiz-Lee.pdf
    • http://muicuiu.dumb1.com/4a07a07a05a02a08/The-Checkout-Girl-My-Life-on-the-Supermarket-Conveyor-Belt-Tazeen-Ahmad-by-Tazeen-Ahmad.pdf
    • http://muicuiu.dumb1.com/7a01a07a00a05/For-Colored-Boys-Who-Have-Considered-Suicide-When-the-Rainbow-is-Still-Not-Enough-Coming-of-Age-Coming-Out-and-Coming-Home-by-Keith-Boykin.pdf
    • http://muicuiu.dumb1.com/8a09a04a00a05a08/The-1st-International-Workshop-on-the-Quality-of-Geodetic-Observation-and-Monitoring-Systems-Qugoms-11-Proceedings-of-the-2011-Iag-International-Workshop-Munich-Germany-April-13-15-2011-by-Hansj-rg-Kutterer.pdf
    • http://muicuiu.dumb1.com/7a01a06a06a02a07/Intelligent-Information-Systems-2001-Proceedings-of-the-International-Symposium-Intelligent-Information-Systems-X-June-18-22-2001-Zakopane-Poland-by-M-A-Kopotek.pdf
    • http://muicuiu.dumb1.com/1a01a04a00a07a04a08/Santa-Claus-is-coming---A-gay-erotic-fantasy-Adults-get-excited-when-Santa-is-coming-too-by-Kudos-Krank.pdf
    • http://muicuiu.dumb1.com/8a03a05a09a03/Terrorism-Theirs-amp-Ours-by-Eqbal-Ahmad.pdf
    • http://muicuiu.dumb1.com/2a02a06a06a07a06/The-Gasp-by-Myra-Ahmad.pdf
    • http://muicuiu.dumb1.com/1a04a07a09a01a00/The-Era-of-Women-by-Ahmad-Mohamad-Ali.pdf
    • http://muicuiu.dumb1.com/8a08a00a04a09a00/Hannibal-Barca-by-Adhemar-Ahmad.pdf
    • http://muicuiu.dumb1.com/4a06a00a06a09a07/Leg-Over-Leg-Volume-Two-by-Ahmad-Faris-al-Shidyaq.pdf
    • http://muicuiu.dumb1.com/2a08a09a02a00a01/The-Caretaker-Ranjit-Singh-1-by-A-X-Ahmad.pdf
    • http://muicuiu.dumb1.com/2a04a01a06a05a04/The-Caretaker-A-Ranjit-Singh-Novel-by-A-X-Ahmad.pdf
    • http://muicuiu.dumb1.com/3a04a09a04a03a01/Mad-About-the-Seventies-The-Best-of-the-Decade-by-MAD-Magazine.pdf
    • http://muicuiu.dumb1.com/6a02a00a01a08a01/The-Great-Story-of-Muhammad-by-Ahmad-Hatta.pdf