Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a2c41ca96de67c1…

MALICIOUS

PDF

185.5 KB Created: 2015-08-08 09:58:22 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b85328e2d587eea7d60cfc3a36017d12 SHA-1: 65b6dc731cb2ba73d83f3c424168eb2bf4e48a2b SHA-256: 2a2c41ca96de67c16f4fb5aef44e0f68d97f083ed28f59b7f7b7276653937d6d
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a lure for further malicious activity such as phishing or malware distribution. 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%82%D0%B0%D1%87%D0%BA%D0%B8+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%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://img0.liveinternet.ru/images/attach/c/6//4384/4384093_chit_na_kontra_siti_dengi.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383727_indeycuy_afriki_otkrovennuye_scenuy.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383963_skachat_stalker_zov_monolita_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002440b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2440B 3556 bytes
font_01_sfnt_off0002518e.bin
e708a8e8423a4c300dcdff0ab252ff11878d212bf827b332210c4432126bf2e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2518E 14300 bytes
font_02_sfnt_off00027e81.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E81 14468 bytes
font_03_sfnt_off0002a933.bin
042200033befb56e54dac9b68a455e0aa4e5639f4605fa99f94f9e4bc03a0e7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A933 6624 bytes
font_04_sfnt_off0002bc1c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC1C 6084 bytes
font_05_sfnt_off0002cbb1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBB1 3752 bytes

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