Malicious PDF — malware analysis report

Static analysis result for SHA-256 339dec51432227dd…

MALICIOUS

PDF

186.0 KB Created: 2015-07-26 05:56:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d94031e7f87e7bea47aed46afa43e166 SHA-1: 220bb9196ca322d5c701a6730b1f5e4bb30c1fea SHA-256: 339dec51432227dd44a3668eca8033dbb472ec2be041813f8fa43dad740d87a5
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 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. This suggests the document is designed to lure users to a harmful site.

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%A1%D1%82%D0%BE%D0%BB%D0%B8%D1%86%D0%B0+%D1%81+%D1%81%D0%B0%D1%80%D0%B0%D0%BD%D1%81%D0%BA+%D0%BF%D0%BE%D1%81%D0%BB%D0%B5%D0%B4%D0%BD%D0%B8%D0%B9+%D0%B2%D1%8B%D0%BF%D1%83%D1%81%D0%BA+%D1%87%D0%B8%D1%82%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//4184/4184794_osnovuy_reanimatologii_zaryanskaya_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184430_ulichnuyy_kot_po_imeni_bob_skachat_knigu_besplatno_fb2.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195100_zaryadnoe_ustroystvo_molniya_10_shema.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024362.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24362 3556 bytes
font_01_sfnt_off000250e5.bin
21d83b9e85f71361d9d53ebcb7060f183fc30edceb1e4f94b32972cf2b423310		 pdf-font-stream PDF embedded font (sfnt) at offset 0x250E5 14924 bytes
font_02_sfnt_off00027f91.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F91 14468 bytes
font_03_sfnt_off0002aa43.bin
72cf351305629588ec1e9485a055a31804bd881a80443518efd68df3603e0b00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA43 6864 bytes
font_04_sfnt_off0002be0b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE0B 6084 bytes
font_05_sfnt_off0002cda0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDA0 3752 bytes

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