Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd3c6c5751f241b9…

MALICIOUS

PDF

185.1 KB Created: 2015-07-23 20:15:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 999babdb7a53ebee8e992372ac9795d2 SHA-1: f2f0f420ac21eed90743c28d14e7aee490636be7 SHA-256: cd3c6c5751f241b9340cb2ec781ef295956975a65a7b8238b594e88ccc9be2ac
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is likely used to distribute malware. The URL's keyword parameter suggests a lure for downloading a Windows 7 activation key. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample, but the embedded URL is a strong indicator of malicious intent.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D0%BB%D1%8E%D1%87+%D0%B4%D0%BB%D1%8F+windows+7+%D1%81%D0%B1%D0%BE%D1%80%D0%BA%D0%B0+7601&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184434_reshenie_zadach_s5_po_himii.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183241_shema_dvigatelya_izh_planeta_5.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184356_1s_kompleksnaya_avtomatizaciya_8_samouchitel_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a4a6.bin
ee780c109eed82f6ab3f58a8b2e58756edc22d7e34dd051a421e008ae6f93b5a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A4A6 7480 bytes
font_00_sfnt_off00023f16.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F16 3556 bytes
font_01_sfnt_off00024c99.bin
87b5e54dc465c2b0fedbc00354232ee003ec0914f8e8e37b6a20561ecc248c58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C99 14296 bytes
font_02_sfnt_off00027988.bin
477d0c5215e0dc51d9f86c1e7c6a469cefeb30d7c90c30c08ee6d0ad5e4b9bd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27988 14584 bytes
font_04_sfnt_off0002ba9c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA9C 6084 bytes
font_05_sfnt_off0002ca31.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA31 3752 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.