Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc56d626de2c713a…

MALICIOUS

PDF

184.3 KB Created: 2015-07-24 05:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 07d4d797eb77fb5b7960dd732068203c SHA-1: 3b193594f7d0f439780e1f9441be1ba40ec246e6 SHA-256: bc56d626de2c713a7470b07dd608904e120e4a0f97e13babbf6e63386bc7311f
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to botcraftman.ru. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a Pdf.Dropper.Agent. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8789265-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8789265-0
  • 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%BC%D0%BE%D0%B4+%D0%BD%D0%B0+%D0%BC%D0%BE%D1%80%D1%82%D0%B0%D0%BB+%D0%BA%D0%BE%D0%BC%D0%B1%D0%B0%D1%82+9+%D0%BD%D0%B0+%D0%BA%D1%80%D0%B0%D1%82%D0%BE%D1%81%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184990_butuyrka_vse_pesni_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187222_skachat_igru_maynkraft_181_s_modami_cherez_torrent_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184263_skachat_mod_na_maynkraft_152_apokalipsis.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000240de.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240DE 3556 bytes
font_01_sfnt_off00024e61.bin
9bad42800c544d9be3ab1444b664751a9084de36ffd9261e2bc4aae13fb9f38b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E61 13840 bytes
font_02_sfnt_off000279fc.bin
908f39c6424ae1482d803f2e3f4b4ca4c400568618a2c25e345df477bf1698c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x279FC 14468 bytes
font_03_sfnt_off0002a4ae.bin
2e95fa7c3c625fc05e455e55557687cf59d2e56c25c3d14d915263dad008bdc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4AE 6588 bytes
font_04_sfnt_off0002b78e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B78E 6084 bytes
font_05_sfnt_off0002c723.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C723 3752 bytes

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