Malicious PDF — malware analysis report

Static analysis result for SHA-256 353c1601d0bf000f…

MALICIOUS

PDF

26.9 KB Created: 2019-05-03 09:06:37 +01:00 Authoring application: mPDF 5.7
MD5: 89904554cbca52d72d528371de22238a SHA-1: f4a086ccb3d15e3394a2b6553de4977c9b14fe9a SHA-256: 353c1601d0bf000ff2972b3c3b4ced0eaebe022c1b6afe40bd2e080be0a04071
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, identified by the PDF_SEO_LINK_FARM heuristic. These URLs point to external resources, suggesting a link farm or redirection mechanism. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample, and the document body was heavily obfuscated, but the primary attack pattern appears to be directing users to a multitude of external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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://kiteeearpdf.myhome.cx/1f210f210f214f217f219f219/Social-Work-with-Older-Adults-by-Kathleen-McInnis-Dittrich.pdf
    • http://kiteeearpdf.myhome.cx/6f219f215f213f210f210/International-Social-Work-Social-Problems-Cultural-Issues-and-Social-Work-Education-by-Stefan-Borrmann.pdf
    • http://kiteeearpdf.myhome.cx/9f212f219f212f211f218/Living-with-Purpose-in-a-Worn-Out-Body-Spiritual-Encouragement-for-Older-Adults-by-Missy-Buchanan.pdf
    • http://kiteeearpdf.myhome.cx/7f214f213f213f211f216/The-Social-and-Economic-Situation-of-Older-Women-in-Europe-by-Marianne-Coopmans.pdf
    • http://kiteeearpdf.myhome.cx/9f218f215f218f213f215/Aspects-of-clinical-social-workers-decision-making-with-older-adult-clients-with-unmet-psychosocial-and-or-physical-needs-Outcomes-patterns-and-processes-of-referrals-for-services-by-Dawn-Marie-Joosten.pdf
    • http://kiteeearpdf.myhome.cx/8f218f213f215f217f216/101-Careers-in-Social-Work-by-Jessica-A-Ritter.pdf
    • http://kiteeearpdf.myhome.cx/1f211f218f218f216f211f216/Band-Tumbler-Work-Log-Work-Journal-Work-Diary-Log---131-Pages-8-5-X-11-Inches-by-Key-Work-Logs.pdf
    • http://kiteeearpdf.myhome.cx/6f213f211f213f217f213/Clinical-Social-Work-Prac-amp-csbk-Clin-Soc-Wk-by-Prentice-Hall-Pearson.pdf
    • http://kiteeearpdf.myhome.cx/5f218f216f212f211f214/Sex-Work-and-the-City-The-Social-Geography-of-Health-and-Safety-in-Tijuana-Mexico-by-Yasmina-Katsulis.pdf
    • http://kiteeearpdf.myhome.cx/1f211f217f218f210f210f219/Doing-Anti-Oppressive-Practice-Building-Transformative-Politicized-Social-Work-by-Donna-Baines.pdf
    • http://kiteeearpdf.myhome.cx/1f210f217f219f212f213f210/Being-Josie-by-Darcy-McInnis.pdf
    • http://kiteeearpdf.myhome.cx/8f215f219f217f210f212/La-Survivante-by-Marie-Paule-Mcinnis.pdf
    • http://kiteeearpdf.myhome.cx/6f214f211f219f211f210/When-Work-Doesn-t-Work-Anymore-Women-Work-and-Identity-by-Elizabeth-Perle-Mckenna.pdf
    • http://kiteeearpdf.myhome.cx/7f210f210f211f212f212/Asterix-and-Obelix-Coloring-Book-Coloring-Book-for-Kids-and-Adults-This-Amazing-Coloring-Book-Will-Make-Your-Kids-Happier-and-Give-Them-Joy-Best-Books-for-Adults-and-Kids-2-4-4-8-8-12-by-Emma-Kovtun.pdf
    • http://kiteeearpdf.myhome.cx/3f211f211f211f217f212/Cooking-Thin-with-Chef-Kathleen-200-Easy-Recipes-for-Healthy-Weight-Loss-by-Kathleen-Daelemans.pdf
    • http://kiteeearpdf.myhome.cx/1f211f217f217f214f212f213/Pathways-to-Social-Class-A-Qualitative-Approach-to-Social-Mobility-by-Daniel-Bertaux.pdf
    • http://kiteeearpdf.myhome.cx/1f210f211f215f214f216f216/Introduccio-A-La-Psicologia-Social-Introduction-To-Social-Psychology-by-Tom-s-Ib-ez-Gracia.pdf
    • http://kiteeearpdf.myhome.cx/6f214f212f211f214f218/The-Power-of-Social-Intelligence-10-ways-to-tap-into-your-social-genius-by-Tony-Buzan.pdf
    • http://kiteeearpdf.myhome.cx/7f216f219f211f210f213/Inner-Lives-and-Social-Worlds-Readings-in-Social-Psychology-by-James-A-Holstein.pdf
    • http://kiteeearpdf.myhome.cx/7f216f217f211f213f218/Scoping-the-Social-An-Introduction-to-the-Practice-of-Social-Theory-by-Anthony-Woodiwiss.pdf
    • http://kiteeearpdf.myhome.cx/9f218f215f218f213f215/Aspects-of-clinical-social-w

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