Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bd37520e0e823f5…

MALICIOUS

PDF

379.3 KB Created: 2015-08-28 01:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 4ccf297047bdab4eb5323e39b2ff4e47 SHA-1: f8ec9d99449a57b921abb583bc8d2c82a11fb032 SHA-256: 1bd37520e0e823f50a68cf72b26eb09a0b2d87f8803540097514a405ca881fc0
68 Risk Score

Malware Insights

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

The PDF file contains an embedded JavaScript stream and a link to a known malicious redirector. The link is presented to the user as a download for 3D instructions, likely a lure to entice clicks. The redirector is then expected to lead the user to a malicious payload. No specific malware family was identified.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://botcraftman.ru/?lip&keyword=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+3d+%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%82%D0%BE%D1%80+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788353_interer__odnokomnatnoy__kvartiruy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4790/4790282_skachat__besplatno__programmu_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4790/4790602_shema__podklyucheniya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005abe6.bin
21159c4236d21daa00bc0e587840371cd6f3c1702b36083296f8e016edf4f465		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABE6 7892 bytes
font_01_sfnt_off0005c301.bin
02e014b10b4acc1d1259fb240575cbb382254f0954473e018f698e81b6e63105		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C301 13364 bytes

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