Malicious PDF — malware analysis report

Static analysis result for SHA-256 675e84a3a4438f74…

MALICIOUS

PDF

15.9 KB Created: 2019-04-30 03:57:34 +01:00 Authoring application: mPDF 5.7
MD5: 88f096228d4d2b702c57724cfcb330f3 SHA-1: 11987ab0571cd1c48c7c6d028579f124a6b4da40 SHA-256: 675e84a3a4438f74bc72a3a70e32979c299053ae4aaab214cffb52ff884881ab
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a PDF_SEO_LINK_FARM heuristic. While the document body is heavily obfuscated, the presence of numerous URLs suggests an attempt to manipulate search engine results or direct users to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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/1a02a08a00a08a02/Once-Upon-a-Mate-by-Christine-Kirchoff.pdf
    • http://muicuiu.dumb1.com/4a04a06a04a04a08/Bad-Wolf-Bodenstein-amp-Kirchoff-6-by-Nele-Neuhaus.pdf
    • http://muicuiu.dumb1.com/1a00a04a09a03a07/Wanderlust-Dragonlance-Meetings-Sextet-2-by-Mary-L-Kirchoff.pdf
    • http://muicuiu.dumb1.com/3a01a02a02a08a04/Princess-Courtney-and-the-Treasure-Room-Princess-Courtney-2-by-R-Scott-VanKirk.pdf
    • http://muicuiu.dumb1.com/1a00a02a08a02a03a02/Sex-mit-Unbekannten-by-Jaden-Elliots.pdf
    • http://muicuiu.dumb1.com/2a04a04a00a02a00/A-Cup-Full-of-Midnight-by-Jaden-Terrell.pdf
    • http://muicuiu.dumb1.com/4a05a08a05a00a07/Life-An-Autopsy-by-Jaden-Wilkes.pdf
    • http://muicuiu.dumb1.com/1a00a02a02a05a05a05/Ramses-Rule-by-Jaden-Sinclair.pdf
    • http://muicuiu.dumb1.com/2a04a06a01a06a03/Foreign-Exchange-by-Denise-Jaden.pdf
    • http://muicuiu.dumb1.com/1a01a08a06a02a06/Reverse-Cowgirl-by-Jaden-Wilkes.pdf
    • http://muicuiu.dumb1.com/2a09a04a03a07a06/Outcast-Living-Out-Loud-1-by-Denise-Jaden.pdf
    • http://muicuiu.dumb1.com/2a09a01a09a05a05/Perfectly-Normal-The-Beast-2-by-Jaden-Wilkes.pdf
    • http://muicuiu.dumb1.com/6a04a08a03a03a05/Anima-Rotta-Bloodmate-2-by-Jaden-Sinclair.pdf
    • http://muicuiu.dumb1.com/3a01a01a07a07a04/Princess-Courtney-s-Bad-Day-Princess-Courtney-1-by-R-Scott-VanKirk.pdf
    • http://muicuiu.dumb1.com/7a05a04a02a00a00/The-Brothers-of-Baker-Street-Baker-Street-Letters-2-by-Michael-Robertson.pdf
    • http://muicuiu.dumb1.com/3a05a03a01a04a08/The-Baker-Street-Translation-Baker-Street-Letters-3-by-Michael-Robertson.pdf
    • http://muicuiu.dumb1.com/5a04a07a04a09a08/The-Ladek-Invasion-Jaden-Toussaint-the-Greatest-2-by-Marti-Dumas.pdf
    • http://muicuiu.dumb1.com/6a00a01a07a05a09/Attack-of-the-Swamp-Thing-Jaden-Toussaint-the-Greatest-4-by-Marti-Dumas.pdf
    • http://muicuiu.dumb1.com/4a09a03a02a05a07/Kissing-Jamie-Baker-Jamie-Baker-1-5-by-Kelly-Oram.pdf
    • http://muicuiu.dumb1.com/2a07a05a03a02a00/Fast-Fiction-A-Guide-to-Outlining-and-Writing-a-First-Draft-Novel-in-Thirty-Days-by-Denise-Jaden.pdf

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