Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba401e8cf30a150…

MALICIOUS

PDF

184.8 KB Created: 2015-07-24 15:14:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: dfb2929962b54817b9cb5794c11fe2bd SHA-1: b9231ebd308e9e36519b5a6f40377a1dbd1118a3 SHA-256: 3ba401e8cf30a150e9b44edf2f38510d12d4d284751879ec70ab786e147ca482
92 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to a known malicious redirector. 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 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=chessbase+12+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+%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://img0.liveinternet.ru/images/attach/c/5//4190/4190728_skachat_igru_gta_san_andreas_kriminalnaya_rossiya_beta_2.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185115_bashkirskiy_shrift_dlya_windows_7_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185425_chituy_dlya_warface_skachat_besplatno_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a4dc.bin
1ec3216c3d7a30bce3c7a5cd4b1f3c595958a60d1a18f754d81f07b13c17bb40		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A4DC 7064 bytes
font_00_sfnt_off00023ddf.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23DDF 3556 bytes
font_01_sfnt_off00024b62.bin
b95f50e440034561662e07cf0ae7936f237d620ece8c59a561500d08d55f5364		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B62 14848 bytes
font_02_sfnt_off00027991.bin
027a4dcc1677eeeaf879fcc807113ef1c4c431cc941d7f11c19f89a18786bac1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27991 14912 bytes
font_04_sfnt_off0002b975.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B975 6084 bytes
font_05_sfnt_off0002c90a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C90A 3752 bytes

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