Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdb1f0a3fd70d5c9…

MALICIOUS

PDF

184.3 KB Created: 2015-07-25 08:33:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1e1bb4b4927384deb1434ce830048280 SHA-1: ca40188a6fb784a2dcc9a612c201177ac946b5ef SHA-256: cdb1f0a3fd70d5c9bada36fff00110d60388637657033e092841170b5114bda5
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/?lip&keyword=%D0%B7%D0%B0%D0%BA%D0%B0%D0%B7%D0%B0%D1%82%D1%8C+gta+5&charset=utf-8` is the primary indicator of malicious intent. The ML classifier also strongly flagged this PDF as malicious. The document body is largely unreadable binary data, providing no further context on the lure.

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%B7%D0%B0%D0%BA%D0%B0%D0%B7%D0%B0%D1%82%D1%8C+gta+5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190065_skachat_vuykroyki_platev.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185421_skachat_magic_bullet_looks_dlya_sony_vegas_11.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196666_skachat_gameplayer_dlya_vzloma_igr_na_android.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023dcd.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23DCD 3556 bytes
font_01_sfnt_off00024b50.bin
eeb52e1f4dc08d48b823f8828efc32ec9dd37e184229b3eef5a466fbb98f6b55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B50 14892 bytes
font_02_sfnt_off00027964.bin
0cef242bd8d677b758ed690633732dfa0759ba59228250f46b3fec27b2bdbf72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27964 15008 bytes
font_03_sfnt_off0002a5ad.bin
de134b7ddfadba76d08c41a3e81e6effa30aae983da23475b68dba1542feed00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A5AD 6368 bytes
font_04_sfnt_off0002b794.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B794 6084 bytes
font_05_sfnt_off0002c729.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C729 3752 bytes

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