Malicious PDF — malware analysis report

Static analysis result for SHA-256 71318fd33eeda296…

MALICIOUS

PDF

16.0 KB Created: 2019-04-30 19:07:46 +01:00 Authoring application: mPDF 5.7
MD5: a3543a6bbb90032668b26aad8777095c SHA-1: 5e82289bb88eda28b0652c868767e08190aa9bb6 SHA-256: 71318fd33eeda296340791aa61add654c098bd9b7a4c82e8e91bb3bb6f4aa43e
92 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 links suggests an attempt to direct users to external resources. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/1097092092093094/Meet-Felicity-An-American-Girl-American-Girls-Felicity-1-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/1094099099091092/Meet-Felicity-An-American-Girl-The-American-Girls-Felicity-1-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/8092095098094099/Meet-Felicity-An-American-Girl-1774-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/3091093096095095/Felicity-An-American-Girl-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/1093095090092099/Felicity-An-American-Girl-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/2093097093094093/Meet-Molly-An-American-Girl-American-Girls-Molly-1-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/1091097090095093/Meet-Josefina-An-American-Girl-American-Girls-Josefina-1-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/2093096093096091/Meet-Kit-An-American-Girl-1934-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/2090098096093098/Felicity-s-Story-Collection-with-Other-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/5099095095090092/Felicity-Discovers-a-Secret-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/3092095098090095/Felicity-Saves-the-Day-A-Summer-Story-1774-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/7091092091092094/The-One-and-Only-American-Girls-Maryellen-1-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/1098090097095098/Lady-Margaret-s-Ghost-A-Felicity-Mystery-American-Girl-Mysteries-by-Elizabeth-McDavid-Jones.pdf
    • http://loaminoo.linkpc.net/1099096092090090/Meet-Kirsten-An-American-Girl-American-Girls-Kirsten-1-by-Janet-Beeler-Shaw.pdf
    • http://loaminoo.linkpc.net/1095093097096093/Meet-Addy-An-American-Girl-American-Girls-Addy-1-by-Connie-Rose-Porter.pdf
    • http://loaminoo.linkpc.net/2095095096090090/Samantha-s-Surprise-A-Christmas-Story-American-Girls-Samantha-3-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/1095093095095091/Molly-Saves-the-Day-A-Summer-Story-American-Girls-Molly-5-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/1094090090099094/Josefina-s-Surprise-A-Christmas-Story-American-girls-Josefina-3-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/1095093095096092/Molly-Learns-a-Lesson-A-School-Story-American-Girls-Molly-2-by-Valerie-Tripp.pdf
    • http://loaminoo.linkpc.net/3092095097099093/Happy-Birthday-Josefina-A-Springtime-Story-American-Girls-Josefina-4-by-Valerie-Tripp.pdf