Malicious PDF — malware analysis report

Static analysis result for SHA-256 b347203121f27598…

MALICIOUS

PDF

13.6 KB Created: 2019-04-30 02:22:31 +01:00 Authoring application: mPDF 5.7
MD5: b78b105aa1052e1561464ed6c7bbb5d3 SHA-1: 0320587c165ab1d71d7d3aa5121ee37f9c0d7373 SHA-256: b347203121f27598574c3d56876d3bd041acafbf9f45a0f9db9ef1a1fb090429
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file was flagged by a machine learning classifier and contains a large number of embedded links, indicating a link farm or SEO poisoning attempt. The primary heuristic identified a 'PDF_SEO_LINK_FARM' with 32 external links, suggesting the document's purpose is to redirect users to potentially malicious or spam content hosted on the 'xiixmcuin.linkpc.net' domain. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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://xiixmcuin.linkpc.net/2201204200208209/Drake-of-Tanith-The-Chosen-Soul-2-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/8203209200200/A-Sinister-Game-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/4200204203206208/The-Hunt-The-Big-Bad-Wolf-4-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/4205205208206204/The-Spell-The-Big-Bad-Wolf-3-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/4200202200206/The-Strip-The-Big-Bad-Wolf-2-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/4205205208206206/The-Strip-The-Big-Bad-Wolf-2-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/1207207207207207/Samael-The-Lost-Angels-5-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/2209202208206204/The-Vampire-King-The-Kings-1-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/2207207200205206/Redeemer-Syndicate-Novels-1-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/2207203201207204/The-Seelie-King-The-Kings-5-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/5200207201209/The-Vampire-King-The-Kings-1-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/6202201201203/The-Phantom-King-The-Kings-2-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/3203208203208206/Messenger-s-Angel-The-Lost-Angels-2-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/3203206204207201/Death-s-Angel-The-Lost-Angels-3-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/4209204206208/Hell-Bent-Love-Kills-Professionally-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/2202206209202206/Avenger-s-Angel-The-Lost-Angel-1-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/1207208204207202/Vampire-Vampire-by-Heather-Killough-Walden.pdf
    • http://xiixmcuin.linkpc.net/2206201206209203/Forgotten-Soul-Soul-Reader-1-by-Natasha-Duncan-Drake.pdf
    • http://xiixmcuin.linkpc.net/2203200200206206/Chosen-Ancients-of-Light-1-by-Heather-Fleener.pdf
    • http://xiixmcuin.linkpc.net/4209200201205204/The-Drake-Equation-by-Heather-Walsh.pdf

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