Malicious PDF — malware analysis report

Static analysis result for SHA-256 c16a0ae0db218629…

MALICIOUS

PDF

23.2 KB Created: 2019-04-30 04:08:06 +01:00 Authoring application: mPDF 5.7
MD5: fce88d06cc6cc9aea9fe1a458fa7fffc SHA-1: 8eb394416ae5b2ac7b832540d8039a519dc34f9f SHA-256: c16a0ae0db2186293b7b41756f428000735edbfb5a9c98a90927d164e01982b1
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently classified as benign, the sheer volume and the heuristic firing of 'PDF_SEO_LINK_FARM' suggest a malicious intent, possibly for SEO manipulation or to redirect users to malicious content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9784

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://muicuiu.dumb1.com/2a08a06a09a08/Out-of-Mind-Out-of-Sight-A-Revealing-History-of-the-Florida-State-Hospital-at-Chattahoochee-and-Mental-Health-Care-in-Florida-by-Sally-J-Ling.pdf
    • http://muicuiu.dumb1.com/6a00a09a03a04a08/Your-Guide-to-Florida-Property-Investment-for-Global-Buyers-Owning-Investing-and-Enjoying-the-Florida-Lifestyle-Buying-Florida-Real-Estate-Book-1-by-Lisa-and-Lee-Mirman.pdf
    • http://muicuiu.dumb1.com/3a01a02a04a03/Finding-Florida-The-True-History-of-the-Sunshine-State-by-T-D-Allman.pdf
    • http://muicuiu.dumb1.com/4a04a07a05a01a02/Land-of-Sunshine-State-of-Dreams-A-Social-History-of-Modern-Florida-by-Gary-R-Mormino.pdf
    • http://muicuiu.dumb1.com/4a01a04a07/Best-State-Ever-A-Florida-Man-Defends-His-Homeland-by-Dave-Barry.pdf
    • http://muicuiu.dumb1.com/2a07a09a03a08a02/Florida-Happens-Tales-of-Mystery-Mayhem-and-Suspense-from-the-Sunshine-State-by-Greg-Herren.pdf
    • http://muicuiu.dumb1.com/4a08a02a00a06a04/Insane-Asylums-A-Detailed-Synopsis-Of-Their-History-And-Mistreatment-Of-Patients-Psychopath-Sociopath-Mental-Illness-Personality-Disorders-Mental-Health-Insanity-Book-3-by-Alex-Rice.pdf
    • http://muicuiu.dumb1.com/9a07a05a09a07a06/The-Florida-Keys-A-History-of-the-Pioneers-by-John-Viele.pdf
    • http://muicuiu.dumb1.com/9a09a00a08a09/A-Journey-into-Florida-Railroad-History-by-Gregg-M-Turner.pdf
    • http://muicuiu.dumb1.com/3a04a02a00a08a08/Florida-in-Poetry-A-History-of-the-Imagination-by-Jane-Anderson-Jones.pdf
    • http://muicuiu.dumb1.com/5a00a05a00a03a09/A-Culinary-History-of-Florida-Prickly-Pears-Datil-Peppers-amp-Key-Limes-by-Joy-Sheffield-Harris.pdf
    • http://muicuiu.dumb1.com/9a09a01a07a04/Florida-Then-amp-Now-by-Bruce-Hunt.pdf
    • http://muicuiu.dumb1.com/9a01a08a02a09a09/Florida-s-Fabulous-Lighthouses-by-Tim-Ohr.pdf
    • http://muicuiu.dumb1.com/1a04a09a05a07/Florida-by-Christine-Schutt.pdf
    • http://muicuiu.dumb1.com/4a01a07a07a06a00/World-war-Three-Is-the-end-Near-by-The-Florida-Hoosier.pdf
    • http://muicuiu.dumb1.com/8a01a08a01/Florida-by-Lauren-Groff.pdf
    • http://muicuiu.dumb1.com/9a01a08a01a07a02/Florida-s-Fabulous-Trail-Guide-by-Tim-Ohr.pdf
    • http://muicuiu.dumb1.com/9a01a08a03a00a07/Florida-s-Fabulous-Natural-Places-by-Tim-Ohr.pdf
    • http://muicuiu.dumb1.com/9a07a00a07a08a08/Baedeker-s-Florida-by-John-E-Kwoka-Jr-.pdf
    • http://muicuiu.dumb1.com/7a01a03a09a08a02/Zora-in-Florida-by-Stephen-J-Glassman.pdf
    • http://muicuiu.dumb1.com

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