Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c8d961dccc79a5b…

MALICIOUS

PDF

367.5 KB Created: 2015-08-28 02:06:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 99ed1fbca7543899363d33a49690a96c SHA-1: dc8aec2c3a202ccec862cbcff690aceefc63026d SHA-256: 4c8d961dccc79a5b3b829410546701e89bb5faabcb44261fe1ef703861ae369d
90 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious infrastructure. The embedded URL `http://botcraftman.ru/...` is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a compromised or malicious website, likely for phishing or to initiate a malware download. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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=%D0%BF%D1%80%D0%BE%D1%82%D0%BE%D1%82%D0%B8%D0%BF+2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4788/4788442_zolotoe__puteshestvie__sindbada_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4789/4789949_foto__krasivuyh__devushek_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4789/4789590_skachat__maynkraft__0_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005781e.bin
461ac79df9732f941bb3f3bd8ea4853c93160c1689594bf998bce5b661b2b039		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5781E 8008 bytes
font_01_sfnt_off00058f42.bin
23f91dcbd2e88f00fd17588c7183f465028d17657cb2bf3f1404f9760b034133		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58F42 14764 bytes

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