Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8738f96906209a5…

MALICIOUS

PDF

185.4 KB Created: 2015-07-23 19:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 273157cf8b847016f7f86ae97313bc47 SHA-1: 0650e7762bcb4eb0cb051580a0d0c9382bb5251b SHA-256: c8738f96906209a5cd21e42c89117be9f0a8f8bb0928cc8a9cf75138ce61e538
92 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the URL http://botcraftman.ru/, which is likely used to direct users to a phishing or malware download page. No scripts were extracted, and the document body was not sufficiently readable to provide further context.

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%D0%B0%D1%81%D0%BF%D0%BE%D1%80%D1%82%D0%BD%D1%8B%D0%B9+%D1%81%D1%82%D0%BE%D0%BB+%D1%8E%D1%80%D0%B3%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184293_yeksel_2007_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184308_shemuy_vuyshivok_besplatno_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183242_vertikalnuyy_finansovuyy_analiz_primer.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243d0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243D0 3556 bytes
font_01_sfnt_off00025153.bin
5a9e94d351a153309efffb02dbe12e753a18f2e64b3e6cd7cc73bcb2bf5adc10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25153 14136 bytes
font_02_sfnt_off00027dd1.bin
13c118e1b16d932ee74b7fb21ba03c9b98cbe48dfb6f44f054098b58aeb7df02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DD1 14468 bytes
font_03_sfnt_off0002a881.bin
f42dcb2278caabc2ba9f47e9b545bc95fe689a60a75c9ed856897c4e160c4380		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A881 6756 bytes
font_04_sfnt_off0002bbcc.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBCC 6084 bytes
font_05_sfnt_off0002cb61.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB61 3752 bytes

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