Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1c8ffbd93f2a4a0…

MALICIOUS

PDF

21.3 KB Created: 2020-03-14 00:20:45 +00:00 Authoring application: mPDF 5.7
MD5: 53f18019b8b0d909e8cb3a094f37e65f SHA-1: 6dc82b8b3b1bd1471ad4e1e9b2d83ac5879b836a SHA-256: b1c8ffbd93f2a4a0275077241a3f2a2ef0569c66c3c97eaf0206b35f5cc5d803
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of embedded URLs pointing to external PDF documents on a suspicious domain, indicative of a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves luring the user to click on these links, likely leading to further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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://rtuninnsi.myhome.cx/26a46a46a36a36a0/The-Deep-Dark-Disaster-and-Redemption-in-America-s-Richest-Silver-Mine-by-Gregg-Olsen.pdf
    • http://rtuninnsi.myhome.cx/36a86a96a46a36a4/A-Cold-Dark-Place-Emily-Kenyon-1-by-Gregg-Olsen.pdf
    • http://rtuninnsi.myhome.cx/76a26a16a96a56a6/Humanitarian-assistance-disaster-prevention-and-disaster-preparedness-as-means-of-reducing-land-mine-casualties-by-Knut-D-rmann.pdf
    • http://rtuninnsi.myhome.cx/16a86a06a56a26a1/Run-Vengeance-1-by-Gregg-Olsen.pdf
    • http://rtuninnsi.myhome.cx/46a26a56a46a96a9/The-Girl-on-the-Run-Vengeance-1-by-Gregg-Olsen.pdf
    • http://rtuninnsi.myhome.cx/46a36a26a06a56a2/Heart-of-Ice-Emily-Kenyon-2-by-Gregg-Olsen.pdf
    • http://rtuninnsi.myhome.cx/76a46a76a66a66a0/The-Girl-in-the-Woods-Waterman-and-Stark-1-by-Gregg-Olsen.pdf
    • http://rtuninnsi.myhome.cx/46a36a66a16a06a5/Victim-Six-Sheriff-Detective-Kendall-Stark-1-by-Gregg-Olsen.pdf
    • http://rtuninnsi.myhome.cx/36a36a26a46a36a8/Closer-than-Blood-Sheriff-Detective-Kendall-Stark-2-by-Gregg-Olsen.pdf
    • http://rtuninnsi.myhome.cx/26a06a96a76a76a3/Ship-of-Gold-in-the-Deep-Blue-Sea-The-History-and-Discovery-of-the-World-s-Richest-Shipwreck-by-Gary-Kinder.pdf
    • http://rtuninnsi.myhome.cx/36a36a06a56a36a4/Gates-How-Microsoft-s-Mogul-Reinvented-an-Industry--and-Made-Himself-the-Richest-Man-in-America-by-Stephen-Manes.pdf
    • http://rtuninnsi.myhome.cx/36a16a96a76a56a0/Last-Man-Out-The-Story-of-the-Springhill-Mine-Disaster-by-Melissa-Fay-Greene.pdf
    • http://rtuninnsi.myhome.cx/36a46a06a86a76a1/In-Deep-Water-The-Anatomy-of-a-Disaster-the-Fate-of-the-Gulf-and-How-to-End-Our-Oil-Addiction-by-Peter-Lehner.pdf
    • http://rtuninnsi.myhome.cx/26a86a56a56a16a8/Make-Mine-a-Bad-Boy-Deep-in-the-Heart-of-Texas-2-by-Katie-Lane.pdf
    • http://rtuninnsi.myhome.cx/36a76a66a66a76a6/Dark-Dawn-Dark-Redemption-1-by-Melissa-Brodsky.pdf
    • http://rtuninnsi.myhome.cx/86a36a06a86a6/Mine-Dark-Romance-2-by-Aubrey-Dark.pdf
    • http://rtuninnsi.myhome.cx/36a96a16a96a56a7/Surface-of-the-Deep-Searching-for-Booker-Wright-and-Finding-Redemption-Along-the-Way-by-Yvette-Johnson.pdf
    • http://rtuninnsi.myhome.cx/36a06a86a16a86a7/Batman-The-Dark-Knight-Volume-4-Clay-by-Gregg-Hurwitz.pdf
    • http://rtuninnsi.myhome.cx/46a36a16a46a26a3/His-Dark-Kiss-Dark-Gothic-2-by-Eve-Silver.pdf
    • http://rtuninnsi.myhome.cx/16a76a86a76a66a7/Honor-in-the-Dust-Theodore-Roosevelt-War-in-the-Philippines-and-the-Rise-and-Fall-of-America-s-Imperial-Dream-by-Gregg-Jones.pdf

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