Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df47d3f42493a04…

MALICIOUS

PDF

187.3 KB Created: 2015-08-04 09:05:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c17a7b6dc49dfd8ebf973adce2baad3a SHA-1: a4c3cd10dec7e221885d184cfa615bf7e96f5550 SHA-256: 4df47d3f42493a048523083ebc53f0dd10311fce9c18078c1ce8a6bf53e29dc6
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector URL, botcraftman.ru. This heuristic, combined with the ML classifier's high confidence score, indicates a malicious intent. The document body is largely unreadable binary data, but the presence of the malicious URL is sufficient to classify the attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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=Nocd+%D0%B4%D0%BB%D1%8F+%D0%B4%D0%B0%D0%BB%D1%8C%D0%BD%D0%BE%D0%B1%D0%BE%D0%B9%D1%89%D0%B8%D0%BA%D0%B8+%D1%82%D1%80%D0%B0%D0%BD%D1%81%D0%BF%D0%BE%D1%80%D1%82%D0%BD%D0%B0%D1%8F+%D0%BA%D0%BE%D0%BC%D0%BF%D0%B0%D0%BD%D0%B8%D1%8F+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4284/4284172_skachat_klient_maynkraft_164_s_modami_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4276/4276406_skachat_dx11_dlya_crysis_3_cherez_torrent_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4214/4214131_the_sims_2_emmanuelle_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002483c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2483C 3556 bytes
font_01_sfnt_off000255bf.bin
76ff63b7f75734eb8ae6d27a8195ce188d8bbb605b4827e0bfa3aefd0741e77b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255BF 14924 bytes
font_02_sfnt_off00028410.bin
e4694c1483993219cd9f1c691c737866d9510941259cb2cb689061f8f3c204bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28410 14520 bytes
font_03_sfnt_off0002aeed.bin
5623976897ee5d0f69a4a0eed2abad067f39b5d39f2a8c9c024a56faa5427373		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AEED 7120 bytes
font_04_sfnt_off0002c385.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C385 6084 bytes
font_05_sfnt_off0002d31a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D31A 3752 bytes

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