Malicious PDF — malware analysis report

Static analysis result for SHA-256 c45b421485ba617e…

MALICIOUS

PDF

15.3 KB Created: 2019-05-01 20:06:19 +01:00 Authoring application: mPDF 5.7
MD5: 348b8f6fe61e8fbb3a7751f9fc245df5 SHA-1: cfcacc066db23a4f079e2f86cdc818ea56c7ed3e SHA-256: c45b421485ba617e321dde5320b08bfae6c4552dc6f49ad935e3139e26242025
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to distribute malware. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the sheer volume of links and the heuristic firing suggest a malicious intent to redirect users to potentially harmful content hosted on loaminoo.linkpc.net.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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://loaminoo.linkpc.net/3099099099097093/Legacy-by-Rebecca-Brae.pdf
    • http://loaminoo.linkpc.net/4094099095093090/In-Between-Goodbyes-by-Christina-Wible.pdf
    • http://loaminoo.linkpc.net/2099094095090098/Out-of-Goodbyes-Hopelessly-Devoted-2-by-Gen-Ryan.pdf
    • http://loaminoo.linkpc.net/2095093092099094/The-Unfriendly-Dragon-by-Brae-Wyckoff.pdf
    • http://loaminoo.linkpc.net/3093090096096096/Electric-Brae-by-Andrew-Greig.pdf
    • http://loaminoo.linkpc.net/3095096099091095/On-Devil-s-Brae-by-Faith-Mortimer.pdf
    • http://loaminoo.linkpc.net/1090096091094098/An-Evening-of-Long-Goodbyes-by-Paul-Murray.pdf
    • http://loaminoo.linkpc.net/3096091098099093/Meggoline-A-Girl-and-Her-Nanny-Adventures-Transitions-and-Goodbyes-by-Megan-Mills.pdf
    • http://loaminoo.linkpc.net/9098097096094091/Zu-Lebzeiten-ver-ffentlichte-Erz-hlungen-Christine-Lavant-Werke-in-vier-B-nden-2-by-Christine-Lavant.pdf
    • http://loaminoo.linkpc.net/2097090095095097/Christine-Feehan-Box-Set-includes-Drake-Sisters-3-Dark-Saga-10-GhostWalkers-1-by-Christine-Feehan.pdf
    • http://loaminoo.linkpc.net/1090095091098099/A-Christine-Feehan-Holiday-Treasury-Drake-Sisters-2-by-Christine-Feehan.pdf
    • http://loaminoo.linkpc.net/7096094095093095/The-Vision-of-Christine-de-Pizan-by-Christine-de-Pizan.pdf
    • http://loaminoo.linkpc.net/1096091094098096/Aus-Com-by-Christine-Jones.pdf
    • http://loaminoo.linkpc.net/3098094099099097/Christine-by-Stephen-King.pdf
    • http://loaminoo.linkpc.net/3093090098093098/An-Eye-For-Danger-by-Christine-M-Fairchild.pdf
    • http://loaminoo.linkpc.net/1098091095096097/Big-Bad-Wolf-The-Others-2-by-Christine-Warren.pdf
    • http://loaminoo.linkpc.net/5095095094093/Beyond-Every-Mirror-by-Christine-Church.pdf
    • http://loaminoo.linkpc.net/4099096097094099/-TripleX-by-Christine-Zolendz.pdf
    • http://loaminoo.linkpc.net/1099098096090092/After-Darkness-by-Christine-Piper.pdf
    • http://loaminoo.linkpc.net/6095095098095090/The-Emerald-Key-by-Christine-Daigle.pdf
    • http://loaminoo.linkpc.net/2097090095095097/Christine-Feehan-Box-Set-includes-Drake-Sisters-3-Dark-Saga-10-GhostWalkers-1-by-Ch

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