Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e94a5ac1a65dbdc…

MALICIOUS

PDF

23.2 KB Created: 2019-05-02 01:02:39 +01:00 Authoring application: mPDF 5.7
MD5: 99377892009fdf71831013c15dd7d0ad SHA-1: d2cc8f061b438bfcb5e74683c71746e679737767 SHA-256: 4e94a5ac1a65dbdc10b8bbfac7e592d3deba827a72df1f06dbea80cc38ac604f
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, presented as a link farm, which is a common tactic for SEO poisoning or distributing malicious content. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, and the 'SE_DOWNLOAD_BUTTON' suggests a lure to encourage user interaction. While no scripts were extracted, the structure and link farm strongly suggest an attempt to redirect users to potentially malicious content, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9903

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/9a03a07a08a03a05/Let-Darkness-Take-Hold-by-Cameron-Trost.pdf
    • http://muicuiu.dumb1.com/4a05a07a04a05a08/Nick-s-Time-Out-Nick-s-Awakening-2-by-Simon-Strange.pdf
    • http://muicuiu.dumb1.com/9a03a07a08a05a01/Trost-in-Tranen-D120-by-Franz-Schubert.pdf
    • http://muicuiu.dumb1.com/2a03a01a09a02a09/The-Legend-of-Redback-Jack-by-Cameron-Trost.pdf
    • http://muicuiu.dumb1.com/9a03a07a06a07a04/A-Murderous-Storm-Jan-de-Fries-1-by-Dirk-Trost.pdf
    • http://muicuiu.dumb1.com/9a03a07a09a03a00/Trost--und-Lebensworte-an-Trauerst-by-Ludwig-Ferdinand-Barth.pdf
    • http://muicuiu.dumb1.com/9a03a07a09a07a06/Kalter-Trost-Island-Krimi-by-Quentin-Bates.pdf
    • http://muicuiu.dumb1.com/9a03a07a07a07a08/Henry-C-Trost-Architect-of-the-Southwest-by-Lloyd-C-Engelbrecht.pdf
    • http://muicuiu.dumb1.com/9a03a02a01a07a02/Von-meiner-Stiefmutter-zum-Mann-gemacht-Verbotener-Trost-by-Robin-Zest.pdf
    • http://muicuiu.dumb1.com/8a05a02a03a05a07/Finde-Trost-in-meinen-Armen-BIANCA-1693-by-Victoria-Pade.pdf
    • http://muicuiu.dumb1.com/9a03a07a08a04a04/Running-Toward-Danger-Stories-Behind-the-Breaking-News-of-September-11-by-Cathy-Trost.pdf
    • http://muicuiu.dumb1.com/9a03a07a09a09a02/The-End-of-Performance-Appraisal-A-Practitioners-Guide-to-Alternatives-in-Agile-Organisations-by-Armin-Trost.pdf
    • http://muicuiu.dumb1.com/8a07a02a05a00a03/The-Silk-Road-Nick-Rowan-and-Christopher-Herwig-by-Nick-Rowan.pdf
    • http://muicuiu.dumb1.com/7a02a03a02a01/Plan-B-A-Nick-Heller-Story-Nick-Heller-2-5-by-Joseph-Finder.pdf
    • http://muicuiu.dumb1.com/1a01a07a08a02a03a05/Die-13-satanischen-Blutlinien-QUADRILOGIE-1-Der-globale-Zusammenbruch-des-gegenw-rtigen-Weltsystems-steht-unmittelbar-bevor---2-Die-Ursache-vielen-Der-Antichrist---4-Trost-by-Robin-de-Ruiter.pdf
    • http://muicuiu.dumb1.com/1a01a00a08a05a06a06/Nick-Carter-014-Ein-beraubter-Dieb-by-Nick-Carter.pdf
    • http://muicuiu.dumb1.com/8a08a00a07a03a09/Nick-Carter-010-Ein-fingierter-Einbruch-by-Nick-Carter.pdf
    • http://muicuiu.dumb1.com/1a00a02a05a08a07a09/Wessobrunnerische-Marianische-Fama-Vorstellend-in-Der-Unbefleckten-Sch-Nen-Liebs-Mutter-Einen-Frey-Offenstehenden-Allerannehmlichisten-Gnaden-Brunnen-Zu-Neuem-Trost-Der-Hochl-Bl-Wessobrunnerischen-Ertz-Bruderschafft-Von-Der-Marianischen-by-Veremund-Eisvogel.pdf
    • http://muicuiu.dumb1.com/9a03a07a07a09a05/Practical-Intrusion-Analysis-Prevention-and-Detection-for-the-Twenty-First-Century-Prevention-and-Detection-for-the-Twenty-First-Century-by-Ryan-Trost.pdf
    • http://muicuiu.dumb1.com/4a01a06a06a00a03/About-a-Boy-by-Nick-Hornby.pdf