Malicious PDF — malware analysis report

Static analysis result for SHA-256 8816340aa4844ae6…

MALICIOUS

PDF

184.2 KB Created: 2015-08-08 09:51:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 86fc8681a5e9cd510ea14d4760ef4f8e SHA-1: e096704332fa49717819eddd35d027851ada799f SHA-256: 8816340aa4844ae6ef7024e94c57c7ddf3c7d32cec9b7e78cc14e524f396d1f9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware download site.

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=1%D1%81+77+%D1%82%D0%BE%D1%80%D0%B3%D0%BE%D0%B2%D0%BB%D1%8F+%D0%B8+%D1%81%D0%BA%D0%BB%D0%B0%D0%B4+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383947_skachat_sverhestestvennoe_na_telefon_3_sezon.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384277_brother_hl1112r_drayver_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383808_skachat_butanimaciyu_dlya_android.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023eb2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23EB2 3556 bytes
font_01_sfnt_off00024c35.bin
d99027f6999734a8e1906c48f86c231a5485da5ab0fdbc88b555912395ac20ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C35 14704 bytes
font_02_sfnt_off0002796f.bin
1107c1490e56408d0c2eaea767678a4888654039837a3442c4e49b2705bbf884		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2796F 14512 bytes
font_03_sfnt_off0002a453.bin
df2290cebe4b3e64d1297b80294dc91632bf46bd9471affc3b3b49bbe75acbc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A453 6524 bytes
font_04_sfnt_off0002b6f7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B6F7 6084 bytes
font_05_sfnt_off0002c68c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C68C 3752 bytes

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