Malicious PDF — malware analysis report

Static analysis result for SHA-256 b505b98de0ade203…

MALICIOUS

PDF

18.4 KB Created: 2019-04-30 05:34:31 +01:00 Authoring application: mPDF 5.7
MD5: 32b5c39f13b7ce8eb436722cc6833fce SHA-1: fee599ecbbe31f5e7ca016d354ba5c13e1659f77 SHA-256: b505b98de0ade203a31dfe4afcfc036142a702003bdfd38af67d1a4fcdf87b06
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier strongly flagged this PDF as malicious. While the document body is heavily obfuscated, the presence of numerous URLs pointing to what appear to be manga chapters suggests a lure to a content-rich, potentially malicious, website.

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.net/8094090093094092/-24-Shingeki-no-Kyojin-24-Attack-on-Titan-24-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/9098093093/-15-Shingeki-no-Kyojin-15-Attack-on-Titan-15-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/3097095094092094/-Before-the-Fall-8-Shingeki-no-Kyojin-Before-the-Fall-8-Attack-on-Titan-Before-the-Fall-Manga-8-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/4091099091098094/--LOST-GIRLS-1-Shingeki-no-Kyojin-Lost-Girls-1-Attack-on-Titan-Lost-Girls-Manga-1-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/4097091090099099/-1-Sungeki-no-Kyojin-1-Spoof-on-Titan-1-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/4097091091096090/-2-Sungeki-no-Kyojin-2-Spoof-on-Titan-2-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/4096091099091099/Attack-on-Titan-Vol-20-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/3092099094090/Attack-on-Titan-Vol-15-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/1090093093091099099/Attack-on-Titan-Vol-12-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/4097091090094094/--1-Shingeki-Kyojin-Chuugakkou-1-Attack-on-Titan-Junior-High-1-by-Saki-Nakagawa.pdf
    • http://loaminoo.linkpc.net/1090091090096093/Attack-on-Titan-Vol-2-Attack-on-Titan-2-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/3091094094093098/Attack-on-Titan-Vol-6-Attack-on-Titan-6-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/1091095094090093095/Attack-on-Titan-The-Spinoffs-Collection-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/7094096099093/Attack-on-Titan-Colossal-Edition-1-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/4096090098094092/Attack-on-Titan-Before-the-Fall-Vol-8-Attack-on-Titan-Before-the-Fall-Manga-8-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/3097095099094090/Attack-on-Titan-Before-the-Fall-Vol-2-Attack-on-Titan-Before-the-Fall-Manga-2-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/4096095097093094/Attack-on-Titan-No-Regrets-Complete-Color-Edition-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/3097095096099097/Attack-on-Titan-quot-Shingeki-no-Kyojin-quot-Art-Book-3-by-Kyouzi-Asano.pdf
    • http://loaminoo.linkpc.net/5090090096096095/Attack-on-Titan-Anthology-by-Scott-Snyder.pdf
    • http://loaminoo.linkpc.net/7095099096090/Attack-on-Titan-Junior-High-Omnibus-Vol-1-by-Saki-Nakagawa.pdf
    • http://loaminoo.linkpc.net/3