Malicious PDF — malware analysis report

Static analysis result for SHA-256 0852a91756939cd8…

MALICIOUS

PDF

184.8 KB Created: 2015-08-05 13:27:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9882fbd4ec2923564c2cc853e6bab40f SHA-1: 9d0a80400e42a69dfe22f15792e673ced7cfc258 SHA-256: 0852a91756939cd8f24fd30b693b7ee2ddd78c4a1450e6c8ff07692d4cb3eb6f
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 strongly indicated maliciousness. The embedded URL http://botcraftman.ru/ is likely part of a phishing or malware distribution scheme, aiming to redirect the user to a harmful 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=%D0%B4%D0%B5%D1%82%D1%81%D0%BA%D0%B8%D0%B5+%D0%BF%D0%B5%D1%81%D0%BD%D0%B8+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE+%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/6//4304/4304479_klyuchi_dlya_windows_anytime_upgrade.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304487_kazanorenburg_avtobus_raspisanie.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304444_aleksandr_makedonskiy_istoriya_zavoevaniya_mira_skachat_torrent.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_off00024243.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24243 3556 bytes
font_01_sfnt_off00024fc6.bin
ee77ce95af8809cd301014937df7e1f70fcfc7a07896c3cc4b074f8823f387ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FC6 14152 bytes
font_02_sfnt_off00027bec.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BEC 14468 bytes
font_03_sfnt_off0002a69e.bin
53f204de74a38f6e6bdd9f9fa101ca538d7d3152666f58ffbd412785393f5300		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A69E 6604 bytes
font_04_sfnt_off0002b96b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B96B 6084 bytes
font_05_sfnt_off0002c900.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C900 3752 bytes

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