Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd5cb4008cca09fb…

MALICIOUS

PDF

186.6 KB Created: 2015-08-08 12:33:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 96f0e99045fdb4ba3bd4338c1b140d6a SHA-1: 13e01e569ec2a59c80ea93005c61fdc5f46f68d8 SHA-256: cd5cb4008cca09fb94d25ba9fe797885d443e98edad7de2ad1b67907941b5144
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL http://botcraftman.ru/ is likely part of a phishing or malware distribution chain. No scripts were extracted, and the document body was truncated and unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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%BF%D1%80%D0%B5%D0%B7%D0%B5%D0%BD%D1%82%D0%B0%D1%86%D0%B8%D1%8F+%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0+%D1%80%D0%B0%D0%B7%D1%80%D1%8F%D0%B4%D0%BE%D0%B2+%D0%B8+%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D0%BE%D0%B2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4389/4389888_skachat_phoenix_service_software_2011.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4390/4390423_luysva_yelektricheskaya_plita_instrukciya.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385047_raspisanie_avtobusov_iz_naberezhnuyh_chelnov_v_izhevsk.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245d0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245D0 3556 bytes
font_01_sfnt_off00025353.bin
a5c5b07bcd7cd1b3b25c9f2adfa9fd873a6e0a8c58281dc7e2df7d83053dd648		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25353 15336 bytes
font_02_sfnt_off0002827d.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2827D 14468 bytes
font_03_sfnt_off0002ad30.bin
2225d2c4bc02a5922201b2ae4b6408049dc2a3a9c01ef7ac2fa02824e3fe132f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD30 6760 bytes
font_04_sfnt_off0002c09d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C09D 6084 bytes
font_05_sfnt_off0002d032.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D032 3752 bytes

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