Malicious PDF — malware analysis report

Static analysis result for SHA-256 328993fb6d2b6910…

MALICIOUS

PDF

16.3 KB Created: 2019-05-02 19:16:15 +01:00 Authoring application: mPDF 5.7
MD5: a3dd43437be6456053459484dd73bdbb SHA-1: bdca712f601de5c3e403381b09fa097b7ed3901f SHA-256: 328993fb6d2b6910006d1a72e47c051cc79023ce7291426686f559d5e6f9cf8d
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, forming a link farm. The primary heuristic indicates this is a PDF SEO link farm, suggesting the document's purpose is to drive traffic to these external links. While the individual linked PDFs are marked as benign, the overall structure and the critical heuristic firing strongly suggest a malicious intent to distribute or obscure malicious activity through this link farm. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/2099091099090094/Walking-Wolf-Road-The-Wolf-Road-Chronicles-1-by-Brandon-M-Herbert.pdf
    • http://loaminoo.linkpc.net/5099098096091/Lone-Wolf-and-Cub-Vol-1-The-Assassin-s-Road-Lone-Wolf-and-Cub-1-by-Kazuo-Koike.pdf
    • http://loaminoo.linkpc.net/4092095095090095/The-Wolf-Road-by-Beth-Lewis.pdf
    • http://loaminoo.linkpc.net/3094097096/The-Wolf-Road-by-Beth-Lewis.pdf
    • http://loaminoo.linkpc.net/3098092094092090/The-Wolf-Road-by-Beth-Lewis.pdf
    • http://loaminoo.linkpc.net/4094099096096/The-Road-to-Avalon-Dark-Ages-of-Britain-1-by-Joan-Wolf.pdf
    • http://loaminoo.linkpc.net/4098090098094093/The-Temple-Road-Scarlet-and-the-White-Wolf-5-by-Kirby-Crow.pdf
    • http://loaminoo.linkpc.net/1092098094091094/Pale-Wolf-Bad-Wolf-Chronicles-2-by-Tim-McGregor.pdf
    • http://loaminoo.linkpc.net/4092097095096099/New-Scotia-Pack-Box-Set-Shield-Wolf-Wolf-Lover-Fire-Wolf-by-Victoria-Danann.pdf
    • http://loaminoo.linkpc.net/1096092090099092/Down-a-Lost-Road-The-Lost-Road-Chronicles-1-by-J-Leigh-Bralick.pdf
    • http://loaminoo.linkpc.net/1098091094/Wolf-by-Wolf-Wolf-by-Wolf-1-by-Ryan-Graudin.pdf
    • http://loaminoo.linkpc.net/7094095091093/The-Wolf-Gift-The-Wolf-Gift-Chronicles-1-by-Anne-Rice.pdf
    • http://loaminoo.linkpc.net/4096091096095091/Walking-The-Red-Road-by-Vincent-Cross.pdf
    • http://loaminoo.linkpc.net/5091097099098092/Walking-the-Road-to-Freedom-by-Jeri-Chase-Ferris.pdf
    • http://loaminoo.linkpc.net/3096096095097091/The-Journey-Walking-the-Road-to-Bethlehem-by-Adam-Hamilton.pdf
    • http://loaminoo.linkpc.net/6094094095099092/Runnning-and-Walking-for-Women-Over-40-The-Road-to-Sanity-and-Vanity-by-Kathrine-Switzer.pdf
    • http://loaminoo.linkpc.net/1092092099097098/Dead-Wolf-Walking-Shapes-of-Autumn-3-by-Veronica-Blade.pdf
    • http://loaminoo.linkpc.net/4090097090095/In-Search-of-Captain-Zero-A-Surfer-s-Road-Trip-Beyond-the-End-of-the-Road-by-Allan-C-Weisbecker.pdf
    • http://loaminoo.linkpc.net/2090093098094099/In-Search-of-Captain-Zero-A-Surfer-s-Road-Trip-beyond-the-End-of-the-Road-by-Allan-C-Weisbecker.pdf
    • http://loaminoo.linkpc.net/6092096094090096/Wolf-Erlbruchs-Kinderzimmer-Kalender-2015-Geschwister-by-Wolf-Erlbruch.pdf
    • http://loaminoo.linkpc.net/4096091096095091/Walking-The-Red-Road-by-Vincent-Cross.pd

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