Malicious PDF — malware analysis report

Static analysis result for SHA-256 a174b14b8165515b…

MALICIOUS

PDF

14.6 KB Created: 2019-04-30 03:44:48 +01:00 Authoring application: mPDF 5.7
MD5: 26ee307364a10ff6c1781314d7e549e5 SHA-1: 42b40bac7ddb5b7beedb1c1db25a2f8c12349eb4 SHA-256: a174b14b8165515babc4c84cedeef8a11704925291e00234ff44e02ecb3e139d
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily corrupted, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/2099092098096091/Both-Flesh-and-Not-Essays-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/1097099093094097/Both-Flesh-and-Not-Essays-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/3098095094091/Consider-the-Lobster-and-Other-Essays-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/3095091098093/A-Supposedly-Fun-Thing-I-ll-Never-Do-Again-Essays-and-Arguments-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/6092090091096091/Freedom-and-the-Self-Essays-on-the-Philosophy-of-David-Foster-Wallace-by-Steven-M-Cahn.pdf
    • http://loaminoo.linkpc.net/3093095096/String-Theory-David-Foster-Wallace-on-Tennis-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/1090092092092095092/Consider-David-Foster-Wallace-by-David-Hering.pdf
    • http://loaminoo.linkpc.net/1093097093098098/Infinite-Jest-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/2097091098091095/Oblivion-Stories-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/5093091094093097/The-Last-Interview-and-Other-Conversations-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/1097090091092095/The-Broom-of-the-System-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/5096090090093095/L-Infinie-com-die-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/2098095093093098/Infinite-Jest-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/4090090090090090/The-Pale-King-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/4092092094095096/Understanding-David-Foster-Wallace-by-Marshall-Boswell.pdf
    • http://loaminoo.linkpc.net/3093096098092094/A-Supposedly-Fun-Thing-I-ll-Never-Do-Again-An-Essay-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/1097099092090095/The-Legacy-of-David-Foster-Wallace-by-Samuel-Cohen.pdf
    • http://loaminoo.linkpc.net/6092090091099094/Fate-Time-and-Language-An-Essay-on-Free-Will-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/9097096097091090/Signifying-Rappers-Rap-and-Race-in-the-Urban-Present-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/8097096091099098/Schrecklich-am-sant---aber-in-Zukunft-ohne-mich-by-David-Foster-Wallace.pdf
    • http://loaminoo.linkpc.net/50960900900

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