Malicious PDF — malware analysis report

Static analysis result for SHA-256 38fe0fe2f79504fe…

MALICIOUS

PDF

349.2 KB Created: 2015-08-26 03:08:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f35aa9eee08bc2d9457f1bad553af8dc SHA-1: dc0dddeec77571eedca561c12a304b2cd6527b1d SHA-256: 38fe0fe2f79504fe12a314c9263c4fe5949c37f66d0594943a39a90c45d8dc31
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded document body text is heavily obfuscated and unreadable, suggesting it may contain further malicious content or exploit code. The primary attack vector appears to be directing the user to malicious infrastructure via the embedded URL.

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=%D0%B8%D0%B3%D1%80%D0%B0%D1%82%D1%8C+%D0%B2+%D1%81%D0%B8%D0%BC%D1%83%D0%BB%D1%8F%D1%82%D0%BE%D1%80+%D1%88%D0%BA%D0%BE%D0%BB%D1%8C%D0%BD%D0%B8%D0%BA%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4744/4744203_monster__high__skultimate_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740991_glazov__telefonnuyy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4743/4743828_skachat__uninstaller__for_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052bdf.bin
ec1c5123ef4d2646229ccd40bf8d61548e012e5004b50e43b755e7ce1492f7a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52BDF 8184 bytes
font_01_sfnt_off00054387.bin
208d3bcdd686192ec410e88949972adbea697f038765ca2ef583643572997261		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54387 16248 bytes

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