Malicious PDF — malware analysis report

Static analysis result for SHA-256 c043f09533dca33b…

MALICIOUS

PDF

363.0 KB Created: 2015-08-28 11:33:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0301badc5e21440efc2ef7fdcc2e0b0b SHA-1: 1aa154ecbce2cf3d2b649b7dff00c3d6d80162be SHA-256: c043f09533dca33b607b623c2c78ae0ca2e2c0873df2a044ab03082b85e46b53
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 link to a known malicious redirector. The embedded URL, http://botcraftman.ru/?lip&keyword=project+zomboid+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D0%BE%D1%81%D0%BB%D0%B5%D0%B4%D0%BD%D1%8E%D1%8E+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8E&charset=utf-8, suggests a lure related to downloading a game, which is a common social engineering tactic. No scripts were extracted, limiting further analysis of the execution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=project+zomboid+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D0%BE%D1%81%D0%BB%D0%B5%D0%B4%D0%BD%D1%8E%D1%8E+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8E&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802426_programma__dlya__nablyudeniya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802380_skachat__minecraft__0_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802418_ovir__holodnogorskaya__sumuy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055e14.bin
d90dc07d5439d01f0c5bdd025881c18e42b1745fa0224ae35b10f70bee0a10ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55E14 9884 bytes
font_01_sfnt_off00057997.bin
f15b1222ab7a638eae0b0e3333c34a290bfde81ea107b70d87673af72aca6c1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57997 17036 bytes

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