Malicious PDF — malware analysis report

Static analysis result for SHA-256 17fb70e52df631b5…

MALICIOUS

PDF

377.0 KB Created: 2015-08-23 21:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 2c85c2ff878596cc4c2dbc7aa2b5e045 SHA-1: c9c6c897f838f7b1757b379c91fb4207d1c8e199 SHA-256: 17fb70e52df631b51068d7a004c6aeb6a831e48f2797feb1f1b644047ab09191
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged by multiple heuristics as malicious, including a critical finding for a link to a known malicious redirector. The embedded URL `http://botcraftman.ru/...` is a strong indicator of malicious intent, likely serving as a lure for phishing or malware delivery. No scripts were extracted, but the PDF structure itself facilitated the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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-9107467-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9107467-0
  • 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=%D0%BB%D0%B8%D1%86%D0%B5%D0%BD%D0%B7%D0%B8%D0%BE%D0%BD%D0%BD%D1%8B%D0%B9+%D0%BA%D0%BB%D1%8E%D1%87+%D0%B4%D0%BB%D1%8F+navitel+symbian&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690109_skachat__cs__16_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690128_zvukarik__a__usacheva_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690052_skachat__intro__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000595c0.bin
8cd6a23ea68e44adf8f9a3cf31e14ab40261fd1e3fb44d3a223c71c89a574ac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x595C0 10252 bytes
font_01_sfnt_off0005b1d9.bin
bd913961db159d898a56029516f670ee42ecff0a3a324af0ab5e53ff2c872308		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1D9 16544 bytes

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