Malicious PDF — malware analysis report

Static analysis result for SHA-256 f297733487798466…

MALICIOUS

PDF

13.6 KB Created: 2019-05-04 13:51:13 +01:00 Authoring application: mPDF 5.7
MD5: 2d605f4e70a5cd4c99c5a6befca854b4 SHA-1: de345df05ee32795199872b806307fbd4cc9f08a SHA-256: f2977334877984660d45927005a1410a0919a2f32636b6fd482aa890fd826bce
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various book titles hosted on loaminoo.linkpc.net. While the ML classifier strongly suggests maliciousness, the specific intent appears to be SEO manipulation or potentially distributing further malicious content through these links. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9877

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.net/5098099097095/Mike-Nelson-s-Mind-over-Matters-by-Michael-J-Nelson.pdf
    • http://loaminoo.linkpc.net/6090093099098/Long-Walk-to-Freedom-Autobiography-of-Nelson-Mandela-by-Nelson-Mandela.pdf
    • http://loaminoo.linkpc.net/4091092094095/Nelson-Mandela-s-Favorite-African-Folktales-by-Nelson-Mandela.pdf
    • http://loaminoo.linkpc.net/1094099091097090/Miss-Nelson-Has-a-Field-Day-Miss-Nelson-3-by-Harry-Allard.pdf
    • http://loaminoo.linkpc.net/3091091092093098/Miss-Nelson-Is-Back-Miss-Nelson-2-by-Harry-Allard.pdf
    • http://loaminoo.linkpc.net/2090099095099096/Happy-Kitty-Bunny-Pony-A-Saccharine-Mouthful-of-Super-Cute-by-Michael-J-Nelson.pdf
    • http://loaminoo.linkpc.net/4092093099090099/Your-Mind-Matters-The-Place-of-the-Mind-in-the-Christian-Life-by-John-R-W-Stott.pdf
    • http://loaminoo.linkpc.net/1092095095095095/Inedible-by-M-G-Nelson.pdf
    • http://loaminoo.linkpc.net/7094090095097/Cassidy-by-Lee-Nelson.pdf
    • http://loaminoo.linkpc.net/3090094093097097/Timequest-by-Ray-Faraday-Nelson.pdf
    • http://loaminoo.linkpc.net/8091097/The-Argonauts-by-Maggie-Nelson.pdf
    • http://loaminoo.linkpc.net/5091094093098091/The-Last-Year-of-the-War-by-Shirley-Nelson.pdf
    • http://loaminoo.linkpc.net/2096095096094096/Before-They-Pass-Away-by-Jimmy-Nelson.pdf
    • http://loaminoo.linkpc.net/7090092096093096/Where-is-Dead-Zero-by-Kevin-Nelson.pdf
    • http://loaminoo.linkpc.net/1093097093092/Earthshine-by-Theresa-Nelson.pdf
    • http://loaminoo.linkpc.net/5099095095090091/Felicity-by-Elizabeth-Nelson.pdf
    • http://loaminoo.linkpc.net/7092097095098090/Nelson-s-Dream-by-J-M-Newsome.pdf
    • http://loaminoo.linkpc.net/1091091098091090099/Talitha-Cum-by-Nelson-E-Peebles.pdf
    • http://loaminoo.linkpc.net/8092094092095/Mayday-by-Nelson-DeMille.pdf
    • http://loaminoo.linkpc.net/4098099094095095/The-Colt-by-Dawn-Nelson.pdf
    • http://loaminoo.linkpc.net/5091094093098091/The-L