Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aa1d942d2eb5174…

MALICIOUS

PDF

186.3 KB Created: 2015-07-24 23:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b36f74565aaf91aa7eb920fa169cfb10 SHA-1: 39d3710d13265bc754cfab6ff3d1e56b792c0fca SHA-256: 0aa1d942d2eb517489715784fddfdf36219c982b992c78be129cd07b4842a8cd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link identified as a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The link likely leads to a site designed for phishing or malware distribution. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

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%81%D0%B0%D0%BC%D0%BE%D1%81%D1%82%D0%BE%D1%8F%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+%D0%B6%D0%B8%D0%B7%D0%BD%D1%8C+%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://img1.liveinternet.ru/images/attach/c/5//4191/4191821_skachat_igru_halo_4_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186929_skachat_igru_plants_vs_zombies_2_na_kompyuter_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184820_crysis_2_teksturuy_vuysokogo_razresheniya_skachat.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_off000245e8.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
pdf-font-stream PDF embedded font (sfnt) at offset 0x245E8 3556 bytes
font_01_sfnt_off0002536b.bin
c73c7e1a7de9a04c18909c16a8f07a56997a6a73d9b58cc9959ef1a0c42685fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x2536B 14772 bytes
font_02_sfnt_off00028128.bin
fbe4af72ea4b6832e02f3a94d39805fe74296d1f62d5d4f3c350b4dd983b7d89
pdf-font-stream PDF embedded font (sfnt) at offset 0x28128 14468 bytes
font_03_sfnt_off0002abd6.bin
d69faa0682933c32fb25d0ce2f84210b88f32822f426f90fb091e27abdc8c1e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABD6 6824 bytes
font_04_sfnt_off0002bf7e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF7E 6084 bytes
font_05_sfnt_off0002cf13.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e
pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF13 3752 bytes