Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5325e34fb7dbf43…

MALICIOUS

PDF

31.6 KB Created: 2020-04-06 13:32:37 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e68674a726efd2d4139a3556259ce334 SHA-1: cdd3292b8058f7342838a807e9863ed4266df3f8 SHA-256: b5325e34fb7dbf434f8b40cabfe3b990f11ebe1f5b77e62d394bd5c3b4cd2bee
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO spam campaign. The ML_NYX_PDF_MALICIOUS heuristic also flagged this PDF with high confidence. The embedded URLs are likely used to redirect users to malicious websites or to distribute further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://timeframingconsulting.com/uploads/1/3/0/6/130639960/130639960.html#250+mph+to+km%2Fh
    • http://agrarischehoofdstad.com/uploads/1/3/0/7/130776781/buvebof_boramuxateb.pdf
    • http://felicityturner.net/uploads/1/3/0/6/130604532/somen_sijuta_disiromofanu.pdf
    • http://ilovemoostudios.com/uploads/1/3/0/5/130546294/09b3734981.pdf
    • http://laclinicadellavoro.com/uploads/1/3/1/0/131071286/5249716.pdf
    • http://willmonkslighting.com/uploads/1/3/0/5/130588220/zajananupejosap.pdf
    • http://myprintpad.com/uploads/1/3/0/2/130289332/4fa1fd.pdf
    • http://rauldelacruzlinacero.com/uploads/1/3/0/5/130551423/pidozadimigozaz.pdf
    • http://stringlineconstruction.org/uploads/1/3/0/4/130435826/vuzarajamagasapok.pdf
    • http://donnasdancefund.com/uploads/1/3/0/8/130874332/digogugosurupanixa.pdf
    • http://gifted-richmond.com/uploads/1/3/0/5/130589115/acb3f0e21d68.pdf

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