Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef8e9622e5a9b95…

MALICIOUS

PDF

17.9 KB Created: 2019-05-03 07:44:18 +01:00 Authoring application: mPDF 5.7
MD5: 8b513ca856f79d3ff109bf86a7d00ff5 SHA-1: 2db596eadb7e3c27c1d8c4bb034da6381f5cd299 SHA-256: cef8e9622e5a9b954d7881f68938e35f285ed18180badb4265cdc08567cd8950
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to a single domain, loaminoo.linkpc.net. This is indicative of a link farm or a content redirection scheme. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this malicious intent. No scripts were extracted from this sample, and the document body contained mostly obfuscated data and URLs. The primary attack pattern observed is the distribution of links to external content, likely to drive traffic or host malicious payloads elsewhere.

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/7094091096094091/The-Best-of-Cordwainer-Smith-by-Cordwainer-Smith.pdf
    • http://loaminoo.linkpc.net/7094091097094098/No-No-Not-Rogov-by-Cordwainer-Smith.pdf
    • http://loaminoo.linkpc.net/7094091096099094/Three-to-a-Given-Star-by-Cordwainer-Smith.pdf
    • http://loaminoo.linkpc.net/7094091096093097/Stardreamer-by-Cordwainer-Smith.pdf
    • http://loaminoo.linkpc.net/4097098091093/The-Instrumentality-of-Mankind-by-Cordwainer-Smith.pdf
    • http://loaminoo.linkpc.net/7094091096098097/The-Colonel-Came-Back-From-the-Nothing-at-All-by-Cordwainer-Smith.pdf
    • http://loaminoo.linkpc.net/7094091097094097/The-Burning-of-the-Brain-by-Cordwainer-Smith.pdf
    • http://loaminoo.linkpc.net/7094091096093093/Under-Old-Earth-And-Other-Explorations-by-Cordwainer-Smith.pdf
    • http://loaminoo.linkpc.net/7094091097094096/The-Queen-of-the-Afternoon-by-Cordwainer-Smith.pdf
    • http://loaminoo.linkpc.net/7094091097096092/On-the-Storm-Planet-by-Cordwainer-Smith.pdf
    • http://loaminoo.linkpc.net/7094091097095096/Die-K-nigin-des-Nachmittags-Erz-hlung-by-Cordwainer-Smith.pdf
    • http://loaminoo.linkpc.net/7094091095097093/Short-Stories-by-Cordwainer-Smith-by-Books-LLC.pdf
    • http://loaminoo.linkpc.net/7094091096093094/Mother-Hitton-s-Littul-Kittons-by-Cordwainer-Smith.pdf
    • http://loaminoo.linkpc.net/7094091096094094/The-Game-of-Rat-and-Dragon-by-Cordwainer-Smith-by-Super-Large-Print.pdf
    • http://loaminoo.linkpc.net/7094091098096099/American-Military-Writers-Stephen-E-Ambrose-Oliver-North-Tom-Clancy-John-McCain-Hunter-Scott-P-G-T-Beauregard-Cordwainer-Smith-by-Source-Wikipedia.pdf
    • http://loaminoo.linkpc.net/8099093098097/The-Quest-Ancient-Egypt-4-by-Wilbur-Smith.pdf
    • http://loaminoo.linkpc.net/2097098094097095/Wren-s-Quest-Wren-2-by-Sherwood-Smith.pdf
    • http://loaminoo.linkpc.net/2092092091098096/Worlds-Together-Worlds-Apart-A-History-of-the-World-from-the-Beginnings-of-Humankind-to-the-Present-by-Robert-L-Tignor.pdf
    • http://loaminoo.linkpc.net/9096094090097/Journey-Back-To-Threa-Old-Worlds-amp-New-Worlds-Trilogy-Book-1-by-Cindy-Larie-Rowell-Cowles.pdf
    • http://loaminoo.linkpc.net/3093094096092099/Journey-Back-To-Threa-Old-Worlds-amp-New-Worlds-Trilogy-Book-1-by-Cindy-Larie-Rowell-Cowles.pdf
    • http://loaminoo.linkpc.net/7094091096093094/Moth

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