Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6515e1729b33d36…

MALICIOUS

PDF

380.2 KB Created: 2015-08-27 10:17:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 1df8d9b0a1c45cd1162d771f5927c922 SHA-1: 3ed54f6fee696a6655988b5bbcff5fe5d4a226df SHA-256: b6515e1729b33d36cd66c8488669b3e8f026184c92e13d4289e77ce13a4d3350
92 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This indicates a phishing or social engineering attempt to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was truncated and unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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%9F%D1%81%D0%B8%D1%85%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B0%D1%8F+%D0%BF%D0%BE%D0%B4%D0%B3%D0%BE%D1%82%D0%BE%D0%B2%D0%BA%D0%B0+%D0%B2%D0%BE%D0%B4%D0%B8%D1%82%D0%B5%D0%BB%D1%8F+-+%D0%A1%D0%90+%D0%A8%D1%83%D0%B2%D0%B0%D0%BB%D0%BE%D0%B2%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772286_programma__avtodozvona_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771818_skachat__maynkraft__0100_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772015_skachat__drayvera__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005aad8.bin
a0acf554f073234c7b84026e4b9c1260f9a580d3e9451d55c0d15c2916375d15
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AAD8 8124 bytes
font_01_sfnt_off0005c2ad.bin
3c52aa1cce480af7521cf4afe3111cd14417ccb9363c77dd92688b9b0b51455c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2AD 15028 bytes