Malicious PDF — malware analysis report

Static analysis result for SHA-256 a72a5e085d35c792…

MALICIOUS

PDF

357.0 KB Created: 2015-08-28 11:39:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d4e2dbc24fc70e9432fda1228d700187 SHA-1: 5367ee63db6fb59f4f7622055cefabf05b165532 SHA-256: a72a5e085d35c792dbd211e12c8b12f2ff8399fbeb652ae016c2b27a10bb400b
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 direct link to a known malicious redirector. This suggests the document is designed to lure users to a malicious website. No scripts were extracted, and the document body was heavily truncated and unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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%BA%D0%B0%D0%BB%D0%B5%D0%BD%D0%B4%D0%B0%D1%80%D1%8C+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%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//4802/4802479_skachat__microsoft__excel_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802519_super__su_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802527_marina__stepanova__filosofiya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005510e.bin
f41f465f5be8fcfaffd8c6d698dfbaa631b1706e165c223f1c65e4c1fe2c4f16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5510E 7916 bytes
font_01_sfnt_off00056810.bin
a7fe38d99741bf42b67cc1fc80e8d80246355c7ecb0d3cd2b88ba0abd5a1b5c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56810 14328 bytes

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