Malicious PDF — malware analysis report

Static analysis result for SHA-256 52d726a510a1bfc2…

MALICIOUS

PDF

362.8 KB Created: 2015-08-26 18:44:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0ee527a44256b2aeb62d8626197f2253 SHA-1: b0052f17912c9747b685ac32b1f4bd2223c8b4d9 SHA-256: 52d726a510a1bfc24905d400ae6556927c4640eb6d5d8acf25c75079bb74d459
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector, http://botcraftman.ru/. This heuristic firing, combined with the ML classifier's high confidence, indicates the document is designed to lead the user to a harmful destination. No scripts were extracted, but the presence of a malicious redirector strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%B7%D0%B8%D0%B3%D0%BC%D1%83%D0%BD%D0%B4+%D1%84%D1%80%D0%B5%D0%B9%D0%B4+%D0%B0%D1%83%D0%B4%D0%B8%D0%BE%D0%BA%D0%BD%D0%B8%D0%B3%D0%B8+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762112_nestandartnuye__uroki__po_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762263_skachat__igru__fifa_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762174_skachat__vino__iz_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000561b6.bin
8f1fe490e78a1a508eda582d1bf9e115d6185d4c73e02b3eb59ff4a99975c6bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x561B6 9356 bytes
font_01_sfnt_off00057c02.bin
c5b6041bd432b43a0d93aaf7f27da87248dc9ca1f2a72a22636bb540cd4d8975		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C02 15264 bytes

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