Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b836ad6e1f7ab9…

MALICIOUS

PDF

183.5 KB Created: 2015-08-05 13:46:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 14f000bb49263e6c0957a391eaa79932 SHA-1: 5f0c639a5a6b030be02db8b8dda98d1b69fca2f8 SHA-256: e8b836ad6e1f7ab9d81b7147070f8bdc4d4171d5af9ada47df362dc23b6da997
90 Risk Score

Malware Insights

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

The PDF file contains an embedded link that points to a known malicious redirector. This suggests the document is designed to lure users to a compromised or malicious site. The ML classifier also flagged this PDF with high confidence. 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%B0%D1%81%D1%81%D0%B0%D0%B8+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304643_cleanupas_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304492_taisiya_povaliy_skachat_besplatno_mp3.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304685_diskoteka_retro_fm_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023d24.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D24 3556 bytes
font_01_sfnt_off00024aa7.bin
bb588b10b5c4d3f98f1ccc0792e3db426ce60dcc7e1fd2d647ebd94d3af03dda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24AA7 14388 bytes
font_02_sfnt_off00027778.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27778 14468 bytes
font_03_sfnt_off0002a22a.bin
7a777f56f2c55060678665ea2145b91026899e111046f115a2350306fe88daa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A22A 6364 bytes
font_04_sfnt_off0002b427.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B427 6084 bytes
font_05_sfnt_off0002c3bc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3BC 3752 bytes

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