Malicious PDF — malware analysis report

Static analysis result for SHA-256 e389552aff7cd971…

MALICIOUS

PDF

4.7 KB Created: 2015-06-03 17:00:29 +03:00 Authoring application: DOMPDF
MD5: 052ea4e52a329c7bcd4da847e01449d5 SHA-1: 49f25c8d5c0bf95d47695c026b2748df074d26b3 SHA-256: e389552aff7cd9716efa653a2a478c9e116fe1e4323d5337e7660405d726188d
60 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs pointing to various domains, suggesting a link farm or distribution mechanism. The heuristic PDF_SEO_LINK_FARM indicates a mass of external PDF links, with the primary URL being http://arquiteturaemarketing.com.br/index.php?2015/endurancelab.pdf&hjlcw=1&aspx=2426. The document body also contains text related to forex trading, which may serve as a lure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier clean score 0.1457

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://arquiteturaemarketing.com.br/index.php?2015/endurancelab.pdf&hjlcw=1&aspx=2426
    • http://phcccolorado.org/index.php?2015/arabtera.pdf&effpp=1&aspx=1185
    • http://arquiteturaemarketing.com.br/index.php?2015/endurancelab.pdf&hjlcw=1&aspx=7
    • http://www.tstp.tv/index.php?2015/sliding.pdf&fjzfq=1&aspx=1827
    • http://www.academiafutebolangola.com/index.php?2015/hmdeepfocus.pdf&audtr=1&aspx=1890
    • http://veranomusical.es/index.php?2015/booboodigital.pdf&ieycq=1&aspx=sitemap