Malicious PDF — malware analysis report

Static analysis result for SHA-256 dee5aee3dde54e52…

MALICIOUS

PDF

364.1 KB Created: 2015-08-21 09:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 29c32e1814070a294a9b36d38d9b319c SHA-1: f1084c8e5948bc15e72bd0efe4d2c949b46a8506 SHA-256: dee5aee3dde54e52b452ac32db280b154a46a9a8bdf4d830ea7ebb0d18d66bbc
92 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. No scripts were extracted, but the PDF structure itself is the delivery mechanism for the malicious link.

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=%D0%98%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F+%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D0%BD%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B4%D0%BB%D1%8F+%D1%82%D0%B0%D0%B1%D0%BB%D0%B5%D1%82%D0%BE%D0%BA+%D1%81%D0%B5%D0%B7%D0%B0%D0%BC&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654863_igrat_imenem_korolya_3_igrat_onlayn_besplatno_na_russkom.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654692_nastolnuye_igruy_dlya_vzrosluyh_skachat_i_raspechatat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654877_alcohol_120_dlya_windows_8_x64_skachat_besplatno_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000565a7.bin
9f3b930a5812d4d43ba3829f85620afe9feb7973045c5e1ba206ddd2cb89c755		 pdf-font-stream PDF embedded font (sfnt) at offset 0x565A7 9592 bytes
font_01_sfnt_off00058107.bin
0ff0ae3d4e34061a4b4db529cfad3c9aae9c9dbcfe291ea34daf8062d87f0266		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58107 15664 bytes

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