Malicious PDF — malware analysis report

Static analysis result for SHA-256 211637b293ac3d94…

MALICIOUS

PDF

184.3 KB Created: 2015-08-05 22:18:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c311aa4752d26ff193e33ed175570418 SHA-1: fdc36db2f05bc497cb100763e0a85a0ed8606cca SHA-256: 211637b293ac3d9400c1d32e8f27dae4650a1f755b1b9831071abc3c8ac60b34
90 Risk Score

Malware Insights

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

The PDF file was flagged by a malicious redirector heuristic, pointing to the URL http://botcraftman.ru/. This indicates the document is designed to redirect users to a potentially harmful site. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was not parsable.

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+mix+server+%D0%B4%D0%BB%D1%8F+minecraft&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305646_skachat_antivirus_besplatno_na_1_god_kasperskogo.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304705_skachat_muzuyku_vkontakte.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4308/4308351_corel_videostudio_pro_x5_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a2c8.bin
55cc4d8f1d1c594eccd716ed1ae082788e19cd9b341dfb07145cf7ebd3857f98		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A2C8 7092 bytes
font_00_sfnt_off00023bc5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23BC5 3556 bytes
font_01_sfnt_off00024948.bin
d243ea4a1e4da869d028c8f3a585625dde8c7aa2d967652eb10204c819cd607d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24948 14588 bytes
font_02_sfnt_off00027679.bin
30dee267df11740edc205054b8bde65827087e8f43980e6ac9a7c3de1a18884d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27679 14956 bytes
font_04_sfnt_off0002b773.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B773 6084 bytes
font_05_sfnt_off0002c708.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C708 3752 bytes

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