Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a46cede99039096…

MALICIOUS

PDF

186.3 KB Created: 2015-07-24 23:38:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a7d0bd1e95041a92cd12a8866ff54cdd SHA-1: cab143b84c12a0d2ccff0e3b5f47429cdb0b5214 SHA-256: 2a46cede9903909672843a13aa6a685b3275e14c9504d5017d3506e1265e6ec8
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 strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact lure.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D0%B1%D0%BE%D1%80%D0%BA%D1%83+%D0%BC%D0%BE%D0%B4%D0%BE%D0%B2+%D0%BD%D0%B0+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+152+%D0%BE%D1%82+%D0%B1%D0%B5%D0%BD%D0%B4%D0%B5%D1%80%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195489_obrazec_pisma_arendodatelyu_o_provedenii_remonta.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184707_shablon_dlya_raspisaniya_urokov_s_tekstom_dlya_zamenuy.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193206_koduy_na_fallout_new_vegas_na_vse.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002435b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2435B 3556 bytes
font_01_sfnt_off000250de.bin
f6688225fcc2d9471cd2244c7a0ffd9b2f9133028537a040c75cc034a96059b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x250DE 14892 bytes
font_02_sfnt_off00027f14.bin
d09923cbdc305950305c98b16fd731505617ef87fa48d967c0f3dc823af7b848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F14 14640 bytes
font_03_sfnt_off0002aa47.bin
07a35bed5473b351218dd1453e72878816c40763ad86b1bde27d3470ddd92bf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA47 7188 bytes
font_04_sfnt_off0002bf66.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF66 6084 bytes
font_05_sfnt_off0002cefb.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEFB 3752 bytes

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