Malicious PDF — malware analysis report

Static analysis result for SHA-256 db1dda2310238fc4…

MALICIOUS

PDF

186.4 KB Created: 2015-07-25 05:36:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: cdfb9f180b41f40c703363e83d4b42c4 SHA-1: 75dd2b618efb117f13e7355c400967d428f52fed SHA-256: db1dda2310238fc4ed09d8caf3fa6c953f31a9e9d4d3d6fc4550031af166b109
90 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a compromised or malicious site.

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=%D0%BA%D0%BE%D1%80%D0%BE%D1%82%D0%BA%D0%BE%D0%BC%D0%B5%D1%82%D1%80%D0%B0%D0%B6%D0%BD%D1%8B%D0%B5+%D1%84%D0%B8%D0%BB%D1%8C%D0%BC%D1%8B+3d+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4199/4199182_winplayer_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188709_vruchenie_attestatov_v_9_klasse_scenariy.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4199/4199363_vse_pesni_klassa_1_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002469b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2469B 3556 bytes
font_01_sfnt_off0002541e.bin
57e2ca6c910dc7993c9ea7468ae176dcac9c9739b0611caffc7060bdd8e8b638		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2541E 14076 bytes
font_02_sfnt_off0002805e.bin
7b3645de8cab34184259d118056e04c3a8a7e884e4d4c5564538de53db7fe6dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2805E 14468 bytes
font_03_sfnt_off0002ab0a.bin
0b9dc647280f1f391ec71ca9b6b34f48c05489ff016598ec6869cda30eabea63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB0A 7132 bytes
font_04_sfnt_off0002bfb8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFB8 6084 bytes
font_05_sfnt_off0002cf4d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF4D 3752 bytes

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