Malicious PDF — malware analysis report

Static analysis result for SHA-256 46334ec277e5dd95…

MALICIOUS

PDF

375.9 KB Created: 2015-08-27 09:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: aa8ead94dd5da19e4713a46cbdb62b39 SHA-1: 6d376daf664e5f4b6ed69cf70ef6e99d26123797 SHA-256: 46334ec277e5dd95506f1c092406843204186e4c8ac8e0357dd57c3b1914045c
90 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. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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=%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%8B+%D0%B4%D0%BB%D1%8F+samsung+galaxy+ace+gt-s5830i+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771782_skachat__muzuyku__besplatno_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771816_osoznannoe__golodanie__i_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771991_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058fd7.bin
09f0866ad7d35f58e6f250fe0460e1fd0a78366b11f8d3f5879616e265ce6f98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58FD7 11312 bytes
font_01_sfnt_off0005af0b.bin
02227619fff2b0e62dcd20e07b91bddeb25269a52e37d7271cb2250a78f721cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF0B 16220 bytes

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