Malicious PDF — malware analysis report

Static analysis result for SHA-256 870e88a3c023d488…

MALICIOUS

PDF

15.8 KB Created: 2019-05-07 04:15:59 +01:00 Authoring application: mPDF 5.7
MD5: a28e271bba68825c196e7e448130643d SHA-1: f4dbfbc618664b43559bc0015383e5b4035f0968 SHA-256: 870e88a3c023d488007d262351eee4bfbe45287d957ce2864439781dd21cf8db
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, disguised as book titles, which is indicative of a link farm designed to trick users into downloading malicious content. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the PDF structure and link farm heuristic suggest an attempt to deliver a second-stage payload via these URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/4a02a02a05a05a05/The-Bicycle-Spy-by-Yona-Zeldis-McDonough.pdf
    • http://muicuiu.dumb1.com/2a02a09a06a00a00/Anne-Frank-by-Yona-Zeldis-McDonough.pdf
    • http://muicuiu.dumb1.com/1a01a07a04a06a03a01/From-Yellow-Star-to-Pop-Star-How-one-young-girl-survived-the-Holocaust-and-became-a-singing-sensation-by-Dorit-Oliver-Wolff.pdf
    • http://muicuiu.dumb1.com/4a09a07a03a00a07/-5-Akatsuki-no-Yona-5-Yona-of-the-Dawn-5-by-Mizuho-Kusanagi.pdf
    • http://muicuiu.dumb1.com/3a09a05a02a01a05/-15-Akatsuki-no-Yona-15-Yona-of-the-Dawn-15-by-Mizuho-Kusanagi.pdf
    • http://muicuiu.dumb1.com/3a09a05a04a09a03/-14-Akatsuki-no-Yona-14-Yona-of-the-Dawn-14-by-Mizuho-Kusanagi.pdf
    • http://muicuiu.dumb1.com/3a03a05a09a01a00/-24-Akatsuki-no-Yona-24-Yona-of-the-Dawn-24-by-Mizuho-Kusanagi.pdf
    • http://muicuiu.dumb1.com/4a09a07a07a01a08/-13-Akatsuki-no-Yona-13-Yona-of-the-Dawn-13-by-Mizuho-Kusanagi.pdf
    • http://muicuiu.dumb1.com/4a09a07a03a01a08/-8-Akatsuki-no-Yona-8-Yona-of-the-Dawn-8-by-Mizuho-Kusanagi.pdf
    • http://muicuiu.dumb1.com/6a06a04a09a00a01/Malika-The-Doll-by-Ana-Star.pdf
    • http://muicuiu.dumb1.com/4a07a05a09a08/Yellow-Star-by-Jennifer-Roy.pdf
    • http://muicuiu.dumb1.com/2a09a06a08a03a07/A-Little-Yellow-Star-by-Faith-H-Tydings.pdf
    • http://muicuiu.dumb1.com/3a05a02a03a03a03/Not-Our-Kind-by-Kitty-Zeldis.pdf
    • http://muicuiu.dumb1.com/7a07a08a03a00a07/The-Geisha-s-Granddaughter-by-Chayym-Zeldis.pdf
    • http://muicuiu.dumb1.com/3a08a03a05a05a06/PLATOON-LEADER-by-James-R-McDonough.pdf
    • http://muicuiu.dumb1.com/9a05a04a08a08a01/LYCAN-TRIBE-THE-PUNISHMENT-by-Rhue-P-McDonough.pdf
    • http://muicuiu.dumb1.com/2a03a05a00a01a08/Finally-a-Bride-Texas-Boardinghouse-Brides-3-by-Vickie-McDonough.pdf
    • http://muicuiu.dumb1.com/6a05a07a09a09/Star-by-Star-Star-Wars-The-New-Jedi-Order-9-by-Troy-Denning.pdf
    • http://muicuiu.dumb1.com/2a06a07a03a03a04/Yona-of-the-Dawn-Vol-7-by-Mizuho-Kusanagi.pdf
    • http://muicuiu.dumb1.com/2a06a09a09a08a07/Yona-of-the-Dawn-Vol-8-by-Mizuho-Kusanagi.pdf

Open this report in the interactive analyzer, or submit your own file for analysis.