Malicious PDF — malware analysis report

Static analysis result for SHA-256 31e4ca88903e92af…

MALICIOUS

PDF

184.5 KB Created: 2015-08-08 10:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ecf723933ebe2f8627c16be0a005adb2 SHA-1: 0336fa168cb96cadf1a225af05f181c79068ddac SHA-256: 31e4ca88903e92afe49ce4d4166ac3d6151cae7f3afeb8ba4b126c3ce30bdbff
92 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also flagged the PDF with high confidence. The embedded URL points to botcraftman.ru, which is likely used to host further malicious content or redirect to a phishing site. No scripts were extracted from this sample.

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%D0%B3%D0%BE%D1%82%D1%8C+%D1%82%D0%B8%D0%B3%D1%80%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/5//4229/4229595_oscar_mouse_script_editor_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384238_skachat_torrent_filmuy_s_goblinskim_perevodom.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384955_command_and_conquer_4_skachat_s_torrenta.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241e3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241E3 3556 bytes
font_01_sfnt_off00024f66.bin
803509d0acb03a91eb00dec14d60ffd10ac7a6f99ed696c6355a861e68aed9ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F66 14540 bytes
font_02_sfnt_off00027c6a.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C6A 14468 bytes
font_03_sfnt_off0002a71c.bin
e71daf9ba93fb5f2e95b20b46fc23d80c0eb7d872c2fe2378cb2196d3d0725f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A71C 6148 bytes
font_04_sfnt_off0002b847.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B847 6084 bytes
font_05_sfnt_off0002c7dc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7DC 3752 bytes

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