Malicious PDF — malware analysis report

Static analysis result for SHA-256 f04d448fb2deae0f…

MALICIOUS

PDF

349.2 KB Created: 2015-08-25 16:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e4f46a61b5ab8f2fe736330678b381b5 SHA-1: c2c99ac639b816adc059e32f7d2ef48849db1993 SHA-256: f04d448fb2deae0f69aa76de5349c2fa5b54697dbfaa796811663509cfa84d8d
92 Risk Score

Malware Insights

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

The PDF contains a link to known malicious redirector infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. The embedded document body is heavily obfuscated and unreadable, preventing a more detailed analysis of its specific content or intent beyond the malicious link. No scripts were extracted from this sample.

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=%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+x3daudio1+7dll&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4732/4732171_skachat__igru__3d_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4732/4732044_bcm43142a0__skachat__drayver_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731739_ofisnuye__igruy__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000528b1.bin
c79f94b95df19a0742f7727fdb0ded93ef5ce20e7beaacf03c42cf45fb8df55e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x528B1 9416 bytes
font_01_sfnt_off0005436b.bin
4537e244392f2057ccad417df9539fec222dd939acf2e2b591aefa801a726a45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5436B 16596 bytes

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