Malicious PDF — malware analysis report

Static analysis result for SHA-256 889ba0f9d6438065…

MALICIOUS

PDF

378.6 KB Created: 2015-08-21 09:21:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 54115a13c01863fa36750865d5c5c5b4 SHA-1: c8531959a19aacc4b271c2d8dd86ea990868d03b SHA-256: 889ba0f9d6438065579f3dc18c3389a61dec0bd7acc26f78142141c761a3780b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of a malicious URL within the document body suggests an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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%A0%D0%B0%D0%BD%D0%BD%D0%B8%D0%B5+%D1%81%D1%80%D0%BE%D0%BA%D0%B8+%D0%B1%D0%B5%D1%80%D0%B5%D0%BC%D0%B5%D0%BD%D0%BD%D0%BE%D1%81%D1%82%D0%B8+%D1%80%D0%B0%D0%B4%D0%B7%D0%B8%D0%BD%D1%81%D0%BA%D0%B8%D0%B9+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654688_esli_s_rebenkom_trudno_petranovskaya_skachat_fb2.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654717_skachat_sabvey_serf_na_nokiya_asha_311.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654786_skachat_programmu_dlya_vzloma_v_kontakte_login_i_parolyu.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a1e1.bin
d28cd28035bd4fa84683af325f124796e996342ce9b756529872eac445f495e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1E1 9496 bytes
font_01_sfnt_off0005bcc6.bin
e2f479e221853505613381cd61ad5d7fba0698914bb02e215d5af01008d18da9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCC6 14284 bytes

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