Malicious PDF — malware analysis report

Static analysis result for SHA-256 e339ab846f8acff9…

MALICIOUS

PDF

373.1 KB Created: 2015-08-28 11:28:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e8f841f230a95bd341f554457696ca31 SHA-1: 9b2abaf2e3f61c681187ff9f324694d0546886df SHA-256: e339ab846f8acff9254901554179cdd536283bd81a4300ba71dda9f1ad755ab5
152 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics as malicious, including a critical alert for a redirector link to botcraftman.ru. The ML classifier also assigned a high probability of maliciousness. The presence of embedded URLs, one of which is confirmed malicious, indicates a likely phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8973519-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8973519-0
  • 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%9A%D0%B0%D0%BA+%D0%BF%D0%B5%D1%80%D0%B5%D0%B2%D0%B5%D1%81%D1%82%D0%B8+%D0%BF%D0%B5%D1%87%D0%B0%D1%82%D1%8C+%D1%81+%D0%BF%D0%BE%D0%BC%D0%BE%D1%89%D1%8C%D1%8E+%D1%8F%D0%B9%D1%86%D0%B0+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4800/4800334_skachat__shablon__menyu_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4800/4800117_skachat__launcher__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4797/4797592_otchet__v__fond_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058f71.bin
85d8059014e808f01656b3a15de307d725c162190e0f54a1a71d5e930ee3fbe5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58F71 9368 bytes
font_01_sfnt_off0005aa5e.bin
7d54f23d92d78279d9e75f3060b214a88671e48671642000d4dde1a93f2de83a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA5E 13160 bytes

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