Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e183d9786b5360…

MALICIOUS

PDF

18.9 KB Created: 2019-05-02 00:44:28 +01:00 Authoring application: mPDF 5.7
MD5: 26c5e2d1ba64b0a51c8fd5f172fcbad8 SHA-1: f6fec0ed8ba64d3f85fdbaeecb6a92ab61f06380 SHA-256: f5e183d9786b5360c02d378e0873f47a8c62cd4db1ba0b4045842a959a0e5f9b
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 links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on the 'loaminoo.linkpc.net' domain. While the specific content of these linked PDFs is not analyzed here, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO spam or to distribute further malicious content. The ML classifier also strongly indicated maliciousness.

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://loaminoo.linkpc.n
    • http://loaminoo.linkpc.net/3099098092097097/The-Winter-People-The-Winter-People-1-by-Rebekah-L-Purdy.pdf
    • http://loaminoo.linkpc.net/1097099098097092/The-Winter-People-The-Winter-People-1-by-Rebekah-L-Purdy.pdf
    • http://loaminoo.linkpc.net/1099095097091092/The-Summer-Marked-The-Winter-People-2-by-Rebekah-L-Purdy.pdf
    • http://loaminoo.linkpc.net/2095099098091090/The-Summer-Marked-The-Winter-People-2-by-Rebekah-L-Purdy.pdf
    • http://loaminoo.linkpc.net/7097098096095/The-Winter-People-by-Phyllis-A-Whitney.pdf
    • http://loaminoo.linkpc.net/2097096095098091/Winter-s-End-by-Rebekah-Lyn.pdf
    • http://loaminoo.linkpc.net/4099094099092091/Winter-s-End-Seasons-of-Faith-2-by-Rebekah-Lyn.pdf
    • http://loaminoo.linkpc.net/2093091097091/Wandering-Through-Winter-A-Naturalist-s-Record-of-a-20-000-Mile-Journey-Through-the-North-American-Winter-by-Edwin-Way-Teale.pdf
    • http://loaminoo.linkpc.net/2094096091090099/The-War-Against-Miss-Winter-Rosie-Winter-1-by-Kathryn-Miller-Haines.pdf
    • http://loaminoo.linkpc.net/2092090092097096/Winter-s-Scars-The-Forsaken-Winter-s-Saga-5-by-Karen-Luellen.pdf
    • http://loaminoo.linkpc.net/1095095097090099/Winter-s-Wrath-Sacrifice-Winter-s-Saga-3-by-Karen-Luellen.pdf
    • http://loaminoo.linkpc.net/4096094091098/A-Witch-in-Winter-Winter-Trilogy-1-by-Ruth-Warburton.pdf
    • http://loaminoo.linkpc.net/9092091099096/The-Road-to-Winter-Winter-1-by-Mark-Smith.pdf
    • http://loaminoo.linkpc.net/1098090093091096/The-Romeo-Club-by-Rebekah-L-Purdy.pdf
    • http://loaminoo.linkpc.net/2097092096090099/The-11-Laws-of-Likability-Relationship-Networking-Because-People-Do-Business-with-People-They-Like-by-Michelle-Tillis-Lederman.pdf
    • http://loaminoo.linkpc.net/7094097099094095/Value-People-to-People-Another-way-to-craft-brands-and-do-business-by-Christophe-Fauconnier.pdf
    • http://loaminoo.linkpc.net/4095091099092092/Daisy-and-the-Front-Man-Backstage-Pass-3-by-Rebekah-L-Purdy.pdf
    • http://loaminoo.linkpc.net/7095099093091090/Daily-Routine-What-Makes-the-Difference-between-Highly-Successful-People-and-Unsuccessful-People---Become-the-Master-of-Your-Life-by-Andrew-Gump.pdf
    • http://loaminoo.linkpc.net/1090098090090097091/Rotes-Meer-Der-achte-Fall-f-r-Erik-Winter-Ein-Erik-Winter-Krimi-by-ke-Edwardson.pdf
    • http://loaminoo.linkpc.net/1090098098096092098/Hush-Little-Baby-A-Jefferson-Winter-Thriller-0-6-The-Jefferson-Winter-Chronicles-2-by-James-Carol.pdf