Malicious PDF — malware analysis report

Static analysis result for SHA-256 23e4ea004105b53b…

MALICIOUS

PDF

352.7 KB Created: 2015-08-28 17:57:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f4cc999da091c16c59e338e77030fde8 SHA-1: 8e6a7d32f701fbbb80e4270099ac3444f737ec59 SHA-256: 23e4ea004105b53b19e7e0534373b989f45950b2f6b5442d9e75f3cbf83d1927
150 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by multiple heuristics, including a critical alert for a malicious redirector link. The ML classifier also strongly flagged it. The embedded URL points to 'botcraftman.ru', which is classified as a malicious redirector. This suggests the PDF is intended to lure users to a dangerous site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-8073070-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8073070-0
  • 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%84%D0%BE%D0%BD%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%BF%D0%B0%D1%83%D1%8D%D1%80+%D0%BF%D0%BE%D0%B8%D0%BD%D1%82+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809252_skachat__zvuk_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809246_zayka__video_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809311_skachat__plaschi__s_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053c1f.bin
8fb763cb77db66c54da470289187b97caccfe36142bfb78a0f1e3d201cca19ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53C1F 8608 bytes
font_01_sfnt_off000554e5.bin
479f6578a2bce7e39bf29fba95e23aa1cb8293ca8cadbdc08e0d2a8ce2155f63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x554E5 14872 bytes

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