Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dd2e8bac75bda8c…

MALICIOUS

PDF

383.2 KB Created: 2015-08-29 03:12:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9849426ace88f7a3ad3d9988a8d44f6a SHA-1: 9660637a04c11f5e2df4290af13f078282ab4707 SHA-256: 4dd2e8bac75bda8c170c10dde89177489afd951b9f5b19c2ad5a0eb0e2c2d24f
90 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL `http://botcraftman.ru/` is highly suspicious and likely serves as a lure to a phishing or malware distribution site. No scripts were extracted, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6923

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%B2%D0%B8%D0%B4%D0%B5%D0%BE+%D0%BD%D0%B0+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD+lt25i+%D0%BF%D0%BE%D1%81%D0%BC%D0%BE%D1%82%D1%80%D0%B5%D1%82%D1%8C+%D1%87%D0%B5%D0%B1%D1%83%D1%80%D0%B0%D1%88%D0%BA%D0%B0+%D0%B8+%D0%BA%D1%80%D0%BE%D0%BA%D0%BE%D0%B4%D0%B8%D0%BB+%D0%B3%D0%B5%D0%BD%D0%B0+%D1%81+%D0%BC%D0%B0%D1%82%D0%BE%D0%BC+mp3+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B1%D0%B5%D0%B7+%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817993_easy__print__module_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4819/4819917_chitat__onlayn__uchebnik_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4819/4819941_yelektronnuye__chasuy__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005aada.bin
d8883991c00ad153ac26907b910d7a18b484300cd19ad64c73812faa50fb2768		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AADA 9776 bytes
font_01_sfnt_off0005c742.bin
2aa78f4fcdddb4dccbd02a034e4f08b92a414dd887ba8efbb7f45994a74f1a20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C742 17712 bytes

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