Malicious PDF — malware analysis report

Static analysis result for SHA-256 e22d60e330e3f67a…

MALICIOUS

PDF

353.8 KB Created: 2015-08-28 18:21:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0003772fc7598b9ddc5aa897d0f109dd SHA-1: e7f6367364cfdbabce54b864628bb4eae8d99e2e SHA-256: e22d60e330e3f67aadb88eb3c638ce21827183bc7db68e924aac3ee8b60ff39e
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for a malicious redirector attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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.
  • ClamAV: Pdf.Dropper.Agent-9302034-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9302034-0
  • 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%BF%D0%BB%D0%B0%D0%B3%D0%B8%D0%BD+citizens+%D0%B4%D0%BB%D1%8F+minecraft+152&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809658_raspisanie__avtobusov_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810052_koduy__na__mortal_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810090_warcraft__3__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053cb6.bin
9b6c3aab88bc591539033b11bc156339415d06aa8c53c169172a91a3d1dc63a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53CB6 9536 bytes
font_01_sfnt_off00055721.bin
171212d3d64839ab555ae91f793909b4cb0f8107b018416f6af4def928dad8a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55721 16232 bytes

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