Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6b6d0a7504cc8ce…

MALICIOUS

PDF

345.5 KB Created: 2015-08-28 11:28:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0d286d8548126121a035bd29beb0d02c SHA-1: 34c5f7c495d46d3a1df1475b526a00eab8ab2276 SHA-256: e6b6d0a7504cc8ce22a814f7d0ff92fb4defb0528b3813dc52a5e9bb145fff91
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, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

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=funbox+%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://img0.liveinternet.ru/images/attach/c/7//4796/4796797_os__windows__xp_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4793/4793086_stroenie__skeleta__cheloveka_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4796/4796328_skachat__sniper__elite_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051cc1.bin
4467a748f89f276ed700ec421e84a024ea09caeaff53b22935515d5aa65f7a00
pdf-font-stream PDF embedded font (sfnt) at offset 0x51CC1 8096 bytes
font_01_sfnt_off000533b5.bin
e409c242713bb0055dedffa2799138c9417332f71cf329c1af44c21d2970280d
pdf-font-stream PDF embedded font (sfnt) at offset 0x533B5 16720 bytes