Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d88cf542c7263af…

MALICIOUS

PDF

66.5 KB Created: 2018-06-18 22:19:33 Authoring application: Qt 5.5.1
MD5: 65943c7ecdec9424f22db324bf9ce499 SHA-1: 568b8a3bcaf1abdcacc2c135f981926713897aed SHA-256: 2d88cf542c7263af9baf73730b09a61bdca922d59a8d392b302a8ecad680364e
60 Risk Score

Malware Insights

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

The PDF file contains multiple embedded and invisible links designed to trick the user into navigating to malicious URLs. The heuristic 'PDF_REPEATED_PAYLOAD_LINK_LURE' specifically indicates this behavior, pointing to the URLs found in the evidence. These URLs are likely used to deliver a secondary payload. No scripts were extracted, limiting further analysis of the payload's behavior.

Heuristics 2

  • Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LURE
    PDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked URL.
  • 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://linfisahor.rustasik.ru/?dt&keyword=chatroulette+50+site+&charset=utf-8&source=weebly.com
    • http://linfisahor.bezil.ru/?dt&keyword=chatroulette+50+site+&charset=utf-8&source=weebly.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce00.bin
a8a2c2e3eb725a6eb2a6bd3ca14eec8d90ce909189c511f7e03671b9a14f4008
pdf-font-stream PDF embedded font (sfnt) at offset 0xCE00 1444 bytes
font_01_sfnt_off0000d580.bin
0a2c6c8ab99f10f95100cc8713ab7c3535f25d595089cada79c6f523f76bfeea
pdf-font-stream PDF embedded font (sfnt) at offset 0xD580 19112 bytes