Malicious PDF — malware analysis report

Static analysis result for SHA-256 28e54aad2e076fe4…

MALICIOUS

PDF

361.3 KB Created: 2015-08-21 09:16:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e68ac55004a99e35b15ec6e6dc03ca37 SHA-1: 495d777a5f8908a71a2b1677425becdfe27f0d7e SHA-256: 28e54aad2e076fe4ba98ad9d94d097f6ba728815f4aceb8a51b7e242c1179601
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The embedded URL, http://botcraftman.ru/, is presented in a context that suggests a lure for downloading 'sony vegas pro', indicating a social engineering attempt to trick the user into clicking the malicious link. The ML classifier also flagged this PDF with high confidence.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B2%D0%B7%D0%BB%D0%BE%D0%BC%D0%B0%D0%BD%D0%BD%D1%8B%D0%B9+sony+vegas+pro&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654715_shutochnoe_pozdravlenie_na_yubiley_ot_kitaycev.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654686_wifi_password_hack_v5_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654689_skachat_igru_metro_2034_cherez_torrent_besplatno_na_russkom.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055931.bin
1d82f2b469e08343a1b9b3e560582fc755096739a6a51bb6bb94deac2a19388f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55931 9344 bytes
font_01_sfnt_off000572d5.bin
91bf43c12c3fe31b2ac983112e02340ad791ca72b559035d0cac405d97a7651b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x572D5 16872 bytes

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