Malicious PDF — malware analysis report

Static analysis result for SHA-256 99de69c933dc1908…

MALICIOUS

PDF

359.2 KB Created: 2015-08-27 09:47:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d047450fe61c33b91460950ed841e330 SHA-1: f30566a6e3dbe53adb7eb1cca2d9da1246b37e41 SHA-256: 99de69c933dc1908a0a3a84d61fa27d9e8057786039ce7a7be08313c820b079c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. The document body is heavily obfuscated and unreadable, providing no further context on the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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=no+mans+sky+%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://img1.liveinternet.ru/images/attach/c/7//4771/4771785_realtek__pci__gbe_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771951_monster__high__13_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771916_warcraft__3__frozen_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005507f.bin
a087922e51807540f5bf60017cd6e0fdd1a3dec10d0617f7c744db8c8546c352
pdf-font-stream PDF embedded font (sfnt) at offset 0x5507F 8984 bytes
font_01_sfnt_off00056981.bin
250736d58e3285317509e44bdb9bd770284c1b2d38796f33198238bdee9a067d
pdf-font-stream PDF embedded font (sfnt) at offset 0x56981 17456 bytes