Malicious PDF — malware analysis report

Static analysis result for SHA-256 01b9eb58fd1f4c1c…

MALICIOUS

PDF

350.6 KB Created: 2015-08-27 23:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ef97b7d892409bf55b1e416841cd42a8 SHA-1: 4cdd4cca525ed79337c5629cb9ac01177d33df5e SHA-256: 01b9eb58fd1f4c1c8de38e4ad31e702e17a27bc112fb444e3030ab2b0af7a270
92 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF document contains an embedded URL that is flagged as a malicious redirector. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious redirector is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 2

  • 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 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+%D0%BE%D0%BF%D0%B5%D1%80%D0%B0+%D0%BC%D0%B8%D0%BD%D0%B8+51+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787882_leningrad__hna__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787939_skachat__vidzhet__pogoduy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787791_skachat__programmu__word_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005361c.bin
7526feb89e6600ec1e36a752ce7ddc2dddb0c37c3ef8425ae2e8a2ca06e64bd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5361C 8788 bytes
font_01_sfnt_off00054ee8.bin
cb75776da4eb93e1ccaba85f4d3d3543e3bc47a66be24f1961f22b22b9eccda4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54EE8 13868 bytes

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