Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb6b18a57ac8e8cd…

MALICIOUS

PDF

350.9 KB Created: 2015-08-22 09:21:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 04438f81d54b3975f925900907c52ac2 SHA-1: db495442e0ed9ce6ceb8b19b4a07bb8501027c13 SHA-256: cb6b18a57ac8e8cd9681ba4610ed3ad4648e7b13d0d35ec91527b69251012cdb
90 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is likely used to direct users to a malicious website for phishing or malware distribution. The document body is heavily obfuscated and does not provide clear user-facing text, but the presence of the malicious link is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+my+talking+tom+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674531_igo_primo_2015_dlya_windows_ce_60_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674801_drayvera_na_veb_kameru_asus_k52d.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674720_skachat_maynkraft_1_6_2_s_modami_cherez_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053102.bin
89c612c110a5e95bb6b3af58776e950ec3f77e1e84dca7d145100c7772617cde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53102 9216 bytes
font_01_sfnt_off00054a2b.bin
d51e00b3e59f1dba4ab7ef4d5f13c3e65acac2a3de0874e0eb6987b44f255f30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54A2B 16652 bytes

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