Malicious PDF — malware analysis report

Static analysis result for SHA-256 f82df51425521f6a…

MALICIOUS

PDF

381.1 KB Created: 2015-08-27 10:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 1939fa0af4c8fe03c8735538d622357f SHA-1: decc93b3ac0abb6be6e1e64e8fc468aefdb8e9b4 SHA-256: f82df51425521f6a55dd6d76f64d6d4d72a4a40598937d416f0ffe394ffa5fb8
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious activity. This suggests the document is designed to lure users to a harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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%BB%D0%B0%D1%80%D0%B0+%D0%BA%D1%80%D0%BE%D1%84%D1%82+%D1%80%D0%B0%D1%81%D1%85%D0%B8%D1%82%D0%B8%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%B8%D1%86%D0%B0+%D0%B3%D1%80%D0%BE%D0%B1%D0%BD%D0%B8%D1%86+%D0%B8%D0%B3%D1%80%D0%B0+%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//4772/4772275_novuyy__albom__dimuy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772365_skachat__programmu__retrika_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772498_skachat__drayver__pak_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b015.bin
ebc277ad786d200693c40534dded4cc65849ac9249aa620f6b908e4e63e8fd4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B015 8332 bytes
font_01_sfnt_off0005c899.bin
7f6baa9f6b4a7459614043cd0303e88e4397743db893b656e2d31804ce0a6441		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C899 13972 bytes

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