Malicious PDF — malware analysis report

Static analysis result for SHA-256 75d939b18a5d5e2f…

MALICIOUS

PDF

368.7 KB Created: 2015-08-25 18:41:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f1400847b371412cce971410a50c8502 SHA-1: d4880679dc0f1216f7fd0d081c4fcef97a35b7a2 SHA-256: 75d939b18a5d5e2ffb8350332e70588fe99133561c5344b1718015bfecc21065
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link identified as a malicious redirector. The ML classifier also flagged the document with high confidence. While no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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%A8%D0%B0%D0%B9%D1%82%D0%B0%D0%BD%D0%B0%D1%82+%D1%83%D0%B7%D0%B1%D0%B5%D0%BA+%D1%82%D0%B8%D0%BB%D0%B8%D0%B4%D0%B0+21+%D1%81%D0%B5%D1%80%D0%B8%D1%8F&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4732/4732255_koduy__dlya__cveta_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4733/4733022_skachat__tipovoy__dogovor_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731589_spravochnik__shkolnika__511_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058014.bin
69d4cba1e5cf7671d51155e08d54c3585d24f50afaf12f5bcc1f9a6268a54706		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58014 10120 bytes
font_01_sfnt_off00059bc5.bin
2139ce88f0edbe8f2f861a08449447dff34e11e3a7751cc54d436399686adebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59BC5 12200 bytes

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