Malicious PDF — malware analysis report

Static analysis result for SHA-256 292a4766e09613c0…

MALICIOUS

PDF

14.7 KB Created: 2019-05-01 19:36:13 +01:00 Authoring application: mPDF 5.7
MD5: d9ccb239857c155e975fc93b902ec630 SHA-1: ba2c17cb72977b5e318a4e4e87db38f344ed1fd1 SHA-256: 292a4766e09613c04e8b552b2739bc11e3b61d61c9811389a5db832031a9915d
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified as a link farm. While the document body is heavily obfuscated, the presence of numerous links to external PDF files suggests a distribution or SEO manipulation tactic. No scripts were extracted, and the primary malicious activity appears to be the hosting of these links.

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/2095096091099099/Out-of-the-Dust-by-Karen-Hesse.pdf
    • http://loaminoo.linkpc.net/7092094096092/Safekeeping-by-Karen-Hesse.pdf
    • http://loaminoo.linkpc.net/1093096094093/Out-of-the-Dust-by-Karen-Hesse.pdf
    • http://loaminoo.linkpc.net/6098095092093094/Out-of-the-Dust-by-Karen-Hesse.pdf
    • http://loaminoo.linkpc.net/1093092091094/Will-Sparrow-s-Road-by-Karen-Cushman.pdf
    • http://loaminoo.linkpc.net/4099094094099097/Letters-from-Rifka-by-Karen-Hesse.pdf
    • http://loaminoo.linkpc.net/1094094090091095/Brooklyn-Bridge-by-Karen-Hesse.pdf
    • http://loaminoo.linkpc.net/2097095096095/The-Cats-In-Krasinski-Square-by-Karen-Hesse.pdf
    • http://loaminoo.linkpc.net/4095099095097098/America-A-Prophecy---The-Sparrow-Reader-by-Sparrow.pdf
    • http://loaminoo.linkpc.net/7098095098094099/The-Hesse-Mann-Letters-by-Hermann-Hesse.pdf
    • http://loaminoo.linkpc.net/7091093091096099/Siddartha-A-Classics-Series-Book-by-Hermann-Hesse-Error-free-Transcription-by-Hermann-Hesse.pdf
    • http://loaminoo.linkpc.net/9091091096097096/Best-of-Hermann-Hesse-Der-Steppenwolf-Das-Glasperlenspiel-Briefe-amp-Gedichte-by-Hermann-Hesse.pdf
    • http://loaminoo.linkpc.net/7092091096099098/Siddartha-by-Hermann-Hesse---Authentic-Version-by-Hermann-Hesse.pdf
    • http://loaminoo.linkpc.net/3097096099096098/Sparrow-Man-Sparrow-Man-1-by-M-R-Pritchard.pdf
    • http://loaminoo.linkpc.net/2098090098/Sparrow-by-L-J-Shen.pdf
    • http://loaminoo.linkpc.net/1090091097096091/The-Fall-of-a-Sparrow-by-S-lim-Ali.pdf
    • http://loaminoo.linkpc.net/2091099096092098/Sparrow-by-Sarah-Moon.pdf
    • http://loaminoo.linkpc.net/3091092091096097/The-Little-Sparrow-Named-Too-by-E-Dantes.pdf
    • http://loaminoo.linkpc.net/1099098092092091/On-His-List-by-Wendy-Sparrow.pdf
    • http://loaminoo.linkpc.net/7091090092096093/No-Rest-for-the-Wicked-by-M-L-Sparrow.pdf
    • http://loaminoo.linkpc.net/909109109609709