Malicious PDF — malware analysis report

Static analysis result for SHA-256 076d6bce1c1c7619…

MALICIOUS

PDF

355.2 KB Created: 2015-08-28 11:29:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: abf1540acf1a288833af197d6f6aa352 SHA-1: cfa09bb74b6c1159bf5445c304e564bf4d1ca62b SHA-256: 076d6bce1c1c7619c67c0235f1c8df0de91c2d870679e7a2bb8f4749b0e9d085
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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%D1%85%D0%B5%D0%BC%D0%B0+%D1%83%D0%BB%D1%8C%D1%82%D1%80%D0%B0%D0%B7%D0%B2%D1%83%D0%BA%D0%BE%D0%B2%D0%BE%D0%B3%D0%BE+%D0%B3%D0%B5%D0%BD%D0%B5%D1%80%D0%B0%D1%82%D0%BE%D1%80%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4800/4800575_skachat__igruy__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4801/4801205_testuy__po__okruzhayuschemu_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4799/4799410_skachat__porno__igru_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054c64.bin
cacd9b17e8dbe5009f953b28b58b56e6d80979df2140e5bc386e31857f148eea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54C64 9260 bytes
font_01_sfnt_off000566be.bin
8ab90a771d127e176504e1dc90c266d087ef4395eae8a3c8d7ee07d29a11292e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x566BE 11904 bytes

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