Malicious PDF — malware analysis report

Static analysis result for SHA-256 0181a67c9d381b8c…

MALICIOUS

PDF

185.5 KB Created: 2015-07-23 21:10:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 5faa753dce248ecf1cf8428a90752a4c SHA-1: 5a23c354e8b1f6cc632fff0a0bc28fc7c012fe0c SHA-256: 0181a67c9d381b8c7a338cf38390253a50437e5a1e6bb7c3a3f603d35814dcc8
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. The presence of embedded URLs and the critical heuristic firing strongly suggest a malicious intent, likely for phishing or malware delivery.

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=windows+8+professional+x32+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184844_tabel_vuyhoda_na_rabotu_blank_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184646_dnevnik_slabaka_kniga_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184361_skachat_maynkraft_152_na_russkom_yazuyke_na_kompyuter_besplatno.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a562.bin
d43a1ab56789cc7b5003f3cf617e4e0c2ddab64a0706c53445949703913b219e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A562 7696 bytes
font_00_sfnt_off00023f15.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F15 3556 bytes
font_01_sfnt_off00024c98.bin
4126f349b85e7ac9d4499daadee010e8335c07351768fc1fbe1d3a17a25e83e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C98 14644 bytes
font_02_sfnt_off000279e4.bin
403b3087286e972ac1e31cb07bdeae30410168c5a5272debde8606d5fa12f481		 pdf-font-stream PDF embedded font (sfnt) at offset 0x279E4 14700 bytes
font_04_sfnt_off0002bc0d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC0D 6084 bytes
font_05_sfnt_off0002cba2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBA2 3752 bytes

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