Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa6f845ba7b5011…

MALICIOUS

PDF

189.3 KB Created: 2015-08-06 12:40:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d7dbbca39585fa090ea948b095b1ea19 SHA-1: 9894ad6a3ebe5c0001fb995e7352e9f3ea9a8854 SHA-256: 1fa6f845ba7b5011cfb419927f52a11ad1f546f34d280a05b0b45bb6d4696f34
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 strongly indicated maliciousness. The primary IOC is the malicious URL, which is likely used to deliver a secondary payload or redirect to a phishing page. No scripts were extracted, limiting further analysis of the delivery mechanism.

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%82%D0%B5%D0%BA%D1%81%D1%82+%D0%BF%D0%B5%D1%81%D0%BD%D0%B8+%D0%BD%D0%B0%D1%81%D1%82%D1%8F+%D0%B1%D0%BE%D1%80%D0%B8%D1%81%D0%BE%D0%B2%D0%B0+%D0%BC%D0%B0%D0%BC%D0%B0+%D0%BD%D0%B5%D1%82+%D0%BD%D0%B0+%D1%81%D0%B2%D0%B5%D1%82%D0%B5+%D1%81%D0%BB%D0%BE%D0%B2%D0%B0+%D0%BC%D0%BD%D0%B5+%D1%80%D0%BE%D0%B4%D0%BD%D0%B5%D0%B9&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4308/4308039_kak_otkruyt_fayl_s_rasshireniem_djvu.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305170_tablica_sravneniya_iphone.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4307/4307262_tankovuyy_simulyator_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002517d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2517D 3556 bytes
font_01_sfnt_off00025f00.bin
da9283d36eaac0d9b6173885b28c79c8679f438e1cb37d4274343efa10efa0ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25F00 14816 bytes
font_02_sfnt_off00028d26.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28D26 14468 bytes
font_03_sfnt_off0002b7d9.bin
1d0636dfc6d8372ec496cf040e47073a693cc632ab1cfca260a42af411e1b44b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7D9 6816 bytes
font_04_sfnt_off0002cb5d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB5D 6084 bytes
font_05_sfnt_off0002daf2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DAF2 3752 bytes

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