Malicious PDF — malware analysis report

Static analysis result for SHA-256 649b44d047c27afc…

MALICIOUS

PDF

184.2 KB Created: 2015-08-08 09:52:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: fcf45504d6e145ca834cc2e7a14676f5 SHA-1: 90c7c453e5bb14bcb5e58bb102fe5a1045a5f617 SHA-256: 649b44d047c27afc6b09aa1de92ab6050092a793c15313f7f82209b3d3423f83
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, http://botcraftman.ru/, is identified as a known malicious redirector, suggesting the document's primary purpose is to lure users to a harmful site. No scripts were extracted, but the presence of the malicious URL is sufficient evidence 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+%D1%83%D1%80%D0%BE%D0%BA%D0%B8+%D0%B1%D0%B8%D1%82%D0%B1%D0%BE%D0%BA%D1%81%D0%B0+%D0%BE%D1%82+%D1%87%D0%B0%D0%BC%D0%B1%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384355_face2face_intermediate_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383984_raspoznavatel_teksta_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383997_gadzhet_pokaz_slaydov_skachat.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_off00023e1e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E1E 3556 bytes
font_01_sfnt_off00024ba1.bin
afc5703fe8b7ab3e7cd94c1d08f28850dcbcb5e26b54165449845f4f39fa6912		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BA1 15008 bytes
font_02_sfnt_off00027a1e.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A1E 14468 bytes
font_03_sfnt_off0002a4d0.bin
f39d88078659bddbb69d2fdc8e1709a8f19b6b87ab014632975be0a09a760003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4D0 6380 bytes
font_04_sfnt_off0002b6f1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B6F1 6084 bytes
font_05_sfnt_off0002c686.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C686 3752 bytes

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