Malicious PDF — malware analysis report

Static analysis result for SHA-256 c75322e9029dfa5f…

MALICIOUS

PDF

365.7 KB Created: 2015-08-21 10:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d3cc55b7d7cb0f4fd439415dfbcf39be SHA-1: 9ab7acd926671b6de886b26bfdc52c357ca0bc56 SHA-256: c75322e9029dfa5ff83b450aa8d5b07bb0783cd70624a8baac49281de5d09d58
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and unreadable, providing no further context on the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D0%BE%D0%B4%D1%8B+%D0%BD%D0%B0+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+179+%D0%BD%D0%B0+%D0%BE%D1%80%D1%83%D0%B6%D0%B8%D0%B5+%D0%B8+%D0%BC%D0%B0%D1%88%D0%B8%D0%BD%D1%8B&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4655/4655824_skachat_igru_metro_2_smert_vozhdya_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4655/4655073_zvuki_transformerov_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4655/4655868_muzuyka_dlya_provedeniya_konkursov_skachat_besplatno.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005714f.bin
c84cb1c345e8ef9ef0d2dc8c97be027a9ed041919f90f5e83946a7d6ae20d982		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5714F 9608 bytes
font_01_sfnt_off00058c1a.bin
52ab9c0083816cdada55404cf0cef27132f98ced2d102cc4d253363e7fc41fc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58C1A 13444 bytes

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