Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e8642103985c6d6…

MALICIOUS

PDF

29.4 KB Created: 2020-05-30 10:58:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0232931c291062c2861dace158b2ced SHA-1: 8a4dedfc47a5d3cc6ac11f25077e5f4ad1fd3282 SHA-256: 8e8642103985c6d67e56303ce70acef88a3cc670f7038d5544cf3e4bc1fdeb55
92 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO poisoning to drive traffic to malicious websites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a likely attempt to lure users to compromised or malicious content. The embedded URLs point to domains that appear to be part of this link farm, suggesting a coordinated effort to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9814

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://theyouthbox.com/uploads/1/3/0/3/130323415/130323415.html#2012+nissan+murano+repair+manual
    • http://3hr.undesirable.us/uploads/1/3/0/5/130545485/7f958b0b49e.pdf
    • http://ridetarga.com/uploads/1/3/0/2/130287839/gotokirawunozolep.pdf
    • http://mail.ambitus.gr/uploads/1/3/0/5/130590661/9e81954d12a4f.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048b6.bin
4d351c1286dc450114bbe9d37e63ae92b73be799fb2895985aac16f01683150c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48B6 10100 bytes

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