Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fcdfeb6f5a3269c…

MALICIOUS

PDF

16.1 KB Created: 2019-05-01 19:42:36 +01:00 Authoring application: mPDF 5.7
MD5: b67ca59bb51d6dcad86f59875742832c SHA-1: b33ba13240bb86dbfa87f1b3f3366f4c6c9764cc SHA-256: 1fcdfeb6f5a3269c9ba3f69ceaa521635ac61b671b2773fd1baad3105c16804f
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified as a link farm. The ML classifier also flagged this PDF as malicious. The primary attack pattern appears to be SEO poisoning or directing users to malicious content hosted on the identified domains. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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://cefasfese.4pu
    • http://cefasfese.4pu.com/1739733731730731/Wonder-Woman-Odyssey-Vol-1-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/1739733737732737/Wonder-Woman-Odyssey-Vol-2-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/1734733735736732/Civil-War-Fantastic-Four-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/4734734733737733/The-Best-of-Spider-Man-Volume-1-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/2731734738733735/Midnight-Nation-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/4736739737735732/The-Twilight-Zone-Volume-1-The-Way-Out-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/1737738733733732/Rising-Stars-Vol-2-Power-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/3735730739734735/Rising-Stars-Vol-3-Fire-and-Ash-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/1730738734732736736/Superman-Earth-One-Volume-3-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/5734735739739/Superman-Earth-One-Volume-1-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/4734733736731735/The-Amazing-Spider-Man-Vol-2-Revelations-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/4734731732733730/The-Amazing-Spider-Man-Vol-1-Coming-Home-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/3732730736732738/The-Amazing-Spider-Man-Vol-6-Happy-Birthday-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/7731730730735/Rising-Stars-Vol-1-Born-in-Fire-by-J-Michael-Straczynski.pdf
    • http://cefasfese.4pu.com/4734731733736737/Guitar-Odyssey-by-Michael-Rays.pdf
    • http://cefasfese.4pu.com/1732737734737733/The-Katurran-Odyssey-by-David-Michael-Wieger.pdf
    • http://cefasfese.4pu.com/9734732731736738/Oriental-Odyssey-VIII-The-Schut-by-Karl-May-Michael-M-Michalak.pdf
    • http://cefasfese.4pu.com/9734732731736737/Oriental-Odyssey-VIII-The-Schut-by-Karl-May-Michael-M-Michalak.pdf
    • http://cefasfese.4pu.com/2733737733735738/Oriental-Odyssey-I-The-Shadow-of-the-Padishah-Through-the-Desert-by-Karl-May-Michael-M-Michalak.pdf
    • http://cefasfese.4pu.com/4734739733737/Koestler-The-Literary-and-Political-Odyssey-of-a-Twentieth-Century-Skeptic-by-Michael-Scammell.pdf

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