Malicious PDF — malware analysis report

Static analysis result for SHA-256 043846ea59270d97…

MALICIOUS

PDF

186.9 KB Created: 2015-07-24 14:22:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3b4c99ec9aaee454f8fe3a9032efed29 SHA-1: b7ba79cff1dda5da7908447fe682b387b5760bf9 SHA-256: 043846ea59270d977a879b8b6e18deb22c587dbb7f9ef297533d32c26eedd750
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is a PDF document flagged by multiple heuristics as malicious, including a critical finding for a link to known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/...` is identified as a malicious redirector, suggesting the document's purpose is to lure users to a harmful site. The ML classifier and ClamAV detection further support its malicious nature, indicating it functions as a dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8785477-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8785477-0
  • 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%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83+%D0%BC%D0%B5%D0%B3%D0%B0%D0%BF%D0%BE%D0%BB%D0%B8%D1%81+%D0%BF%D0%B5%D1%80%D0%BC%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/5//4192/4192290_blokadahack_v1_6_by_dekos_exe.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191451_aida64_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191532_skachat_licenzionnuyy_klyuch_dlya_maynkraft.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000247da.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247DA 3556 bytes
font_01_sfnt_off0002555d.bin
fd4e59374cdb1fbd24d9125777a5ff60ece20cdb432f095a307d0af67a83358a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2555D 15280 bytes
font_02_sfnt_off000283b6.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x283B6 14468 bytes
font_03_sfnt_off0002ae68.bin
2639682b8597b76886659835fae71a1b2a0eb4f4324ca33b41d995f96ba88a99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE68 6700 bytes
font_04_sfnt_off0002c1a9.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1A9 6084 bytes
font_05_sfnt_off0002d13e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D13E 3752 bytes

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