Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e1671bfaa7c9efa…

MALICIOUS

PDF

186.5 KB Created: 2015-08-08 16:48:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a9f4f32d20ce92151abb558020f0c2d7 SHA-1: 6efda837d89a4f4630dcec9b9b66611ce22db9b7 SHA-256: 7e1671bfaa7c9efa6e0763ad2b78357ba17f2dc88a06b4984639f4911b02a3d0
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted, and the document body was truncated and uninformative.

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%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+0103+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387837_blue_october_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387861_skachat_igru_kuzya_zhukodrom_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4397/4397532_ruki_vverh_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024699.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24699 3556 bytes
font_01_sfnt_off0002541c.bin
e3cfd1832c9e7f044db5fa053ccc3dc142b2176a5ca83ccfd08cc4ddc702faa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2541C 14840 bytes
font_02_sfnt_off0002821c.bin
f1eb1a7291f823e3201fa39a71d9caf902a5d76ba633e242f473848f49210ebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2821C 14468 bytes
font_03_sfnt_off0002acc8.bin
48c1e00a4dd739c0e00b550bcbab584f6f9536e4f91ece7bc79d75b6e9e2999b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACC8 6712 bytes
font_04_sfnt_off0002c01e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C01E 6084 bytes
font_05_sfnt_off0002cfb3.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFB3 3752 bytes

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