Malicious PDF — malware analysis report

Static analysis result for SHA-256 89429925034333e8…

MALICIOUS

PDF

354.2 KB Created: 2015-08-29 01:55:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 5a2535f8b71b17328133f84349a5024e SHA-1: 75948ba8a46e03e5c9990f510b9282f27e3dab07 SHA-256: 89429925034333e8a59826a5b807be769e03a1427804f44c42f10b335752dc17
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary malicious indicator is the URL http://botcraftcraftman.ru/, which is likely used to host a phishing page or serve a second-stage payload. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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%88%D1%82%D1%80%D0%B5%D0%BA%D0%B5%D1%80+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B8%D0%B9+%D1%8F%D0%B7%D1%8B%D0%BA+%D0%B8+%D0%BA%D1%83%D0%BB%D1%8C%D1%82%D1%83%D1%80%D0%B0+%D1%80%D0%B5%D1%87%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818537_vosstanovit__udalennuyy__vidzhet_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817589_gia__po__matematike_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817426_skachat__stalker__oblivion_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054229.bin
01f54030085027c47eb8fd5ad592e52657538b131df45f77223e80f0bb09f306		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54229 7804 bytes
font_01_sfnt_off00055844.bin
7a6f854ba98fbbc02605e3088b715bd3389e9457db1ccfb0d780cb902cb253a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55844 15988 bytes

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