Malicious PDF — malware analysis report

Static analysis result for SHA-256 55f0453ec062abb1…

MALICIOUS

PDF

185.4 KB Created: 2015-08-07 01:18:09 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f40a9f957f8e9d2f39f48971890a0256 SHA-1: 3693567dbb1a0e9733f5709a3ba54758a5296418 SHA-256: 55f0453ec062abb1d225ff648b2fc1d63fef08d3f5a95fe748feb57d9ec58829
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/. This indicates an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily truncated, limiting further analysis of the specific 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=world+of+warcraft+%D0%BF%D0%B8%D1%80%D0%B0%D1%82%D0%BA%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4311/4311708_kallas_i_onassis_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4309/4309278_bani_pod_klyuch_v_tveri.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305302_telefonnuyy_spravochnik_aktyubinska.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024032.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24032 3556 bytes
font_01_sfnt_off00024db5.bin
d3d8a2fec6fbab8ae1ccb72ef66e0c174db92ea3ceca999262e4d172c2bf7d42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DB5 15148 bytes
font_02_sfnt_off00027cc5.bin
87b2695cc7a49ef2b054833a9149723466c46d88b443d38e13529770861828cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CC5 14748 bytes
font_03_sfnt_off0002a869.bin
7adaf05aeb5f2fcabcd01bd3d480e21c886fa9810ac345ede81e2f5e32b6ee01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A869 6756 bytes
font_04_sfnt_off0002bbdf.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBDF 6084 bytes
font_05_sfnt_off0002cb74.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB74 3752 bytes

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