Malicious PDF — malware analysis report

Static analysis result for SHA-256 90c3a510e1197bba…

MALICIOUS

PDF

21.4 KB Created: 2020-03-15 00:49:45 +00:00 Authoring application: mPDF 5.7
MD5: 9c2f4cb4867391a700afd1237196e1e1 SHA-1: d438d4c5296b34b542bbd430bd96ebce6d048226 SHA-256: 90c3a510e1197bbad14135d0efcbe25916d098aabc3f43932e8e473448c15c39
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links are disguised as PDF documents and point to the domain eascasas.myhome.cx. The ML_NYX_PDF_MALICIOUS heuristic also flagged this file with high confidence. The document body, though partially corrupted, also contains these URLs, reinforcing the link farm attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://eascasas.myhome.cx/1aa1aa8aa1aa3aa3aa7/Amazon-Echo-Amazon-Echo-Advanced-User-Guide-2016-Updated-Echo-Amazon-Echo-User-Manual-Amazon-Alexa-Amazon-Echo-Dot-Amazon-Echo-ebook-by-Jamy-Jackson.pdf
    • http://eascasas.myhome.cx/1aa1aa8aa1aa3aa8aa4/Amazon-Echo-Amazon-Echo-Command-Guide-2016-Updated-Echo-Amazon-Echo-User-Manual-Amazon-Alexa-Amazon-Echo-Dot-Amazon-Echo-ebook-by-Jamy-Jackson.pdf
    • http://eascasas.myhome.cx/1aa1aa8aa1aa3aa8aa3/Amazon-Dot-Niewbie-to-Expert-in-60-Minutes-on-Amazon-Dot-2nd-Generation-Echo-Amazon-Echo-User-Manual-Amazon-Alexa-Amazon-Echo-Dot-Amazon-Echo-ebook-Book-3-by-Jamy-Jackson.pdf
    • http://eascasas.myhome.cx/4aa9aa9aa1aa4aa1/A-Narrative-Of-Travels-On-The-Amazon-And-Rio-Negro-With-An-Account-Of-The-Native-Tribes-And-Observations-On-The-Climate-Geology-And-Natural-History-Of-The-Amazon-Valley-by-Alfred-Russel-Wallace.pdf
    • http://eascasas.myhome.cx/1aa1aa5aa8aa2aa9aa0/Kindle-User-s-Guide-by-Amazon.pdf
    • http://eascasas.myhome.cx/1aa7aa4aa4aa3aa3/Echo-Queen-Echo-Trilogy-2-by-Lindsey-Fairleigh.pdf
    • http://eascasas.myhome.cx/4aa5aa7/Kindle-Paperwhite-User-s-Guide-by-Amazon.pdf
    • http://eascasas.myhome.cx/5aa2aa3aa4aa2aa2/Kindle-Voyage-User-s-Guide-by-Amazon.pdf
    • http://eascasas.myhome.cx/9aa2aa0aa0aa7aa3/Echo-Desert-Run-Echo-3-by-Terry-Moore.pdf
    • http://eascasas.myhome.cx/2aa3aa0aa7aa3aa9/Amazon-Ink-Amazon-1-by-Lori-Devoti.pdf
    • http://eascasas.myhome.cx/4aa5aa1aa9aa5aa7/Echo-Falls-Echo-Falls-1-by-Jaime-McDougall.pdf
    • http://eascasas.myhome.cx/1aa0aa0aa1aa4aa7aa4/Design-Your-Book-75-eBook-Cover-Design-Sites-That-Increase-Amazon-Sales-by-Greg-Strandberg.pdf
    • http://eascasas.myhome.cx/2aa2aa5aa5aa2aa0/The-Amazon-Legion-by-Tom-Kratman.pdf
    • http://eascasas.myhome.cx/2aa4aa1aa7aa3aa7/Running-the-Amazon-by-Joe-Kane.pdf
    • http://eascasas.myhome.cx/5aa7aa8aa2aa0aa8/To-Kindle-in-Ten-Steps-The-Easy-Way-to-Format-Create-and-Self-Publish-an-eBook-on-Amazon-s-Kindle-Direct-Publishing-by-M-A-Demers.pdf
    • http://eascasas.myhome.cx/1aa0aa0aa9aa9aa5aa2/Programming-Amazon-EC2-by-Jurg-van-Vliet.pdf
    • http://eascasas.myhome.cx/2aa5aa5aa5aa4/Amazon-Lily-by-Theresa-Weir.pdf
    • http://eascasas.myhome.cx/1aa2aa9aa8aa2aa3/Amazon-Moon-by-James-A-Haught.pdf
    • http://eascasas.myhome.cx/9aa5aa0aa1aa7/Legends-of-the-Amazon-by-Vinicio-Ortiz.pdf
    • http://eascasas.myhome.cx/1aa3aa8aa4aa9aa0/Dinner-Along-the-Amazon-by-Timothy-Findley.pdf
    • http://eascasas.myhome.cx/4aa9aa9aa1aa4aa1/A-Narrative-Of-Travels-On-The-Amazon-And-Rio-Negro-With-An-Account-Of-The-Native-Tribes-And-Observations-On-The-Climate