Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7dfe9678dcbf904…

MALICIOUS

PDF

185.8 KB Created: 2015-07-24 07:33:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 6d877ff558398971bf26962a3ac71264 SHA-1: b253c79de495773738bdff40594497278d9d3ad5 SHA-256: b7dfe9678dcbf90426a93d8926a6ae516d26a3f70d6c6b8e9d73ddfef5292052
60 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is likely the initial stage of a phishing or malware delivery chain. No scripts were extracted, but the presence of the malicious link strongly suggests a social engineering attack. The file was authored using wkhtmltopdf, which can sometimes be abused for malicious purposes.

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%B2%D1%81%D0%B5+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC%D1%8B+%D1%80%D0%B8%D1%82%D0%BC+%D0%B4%D0%BE%D1%80%D0%BE%D0%B3+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188079_skachat_fallout_3_cherez_torrent_na_russkom_ot_mehanikov.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187480_koduy_na_gta_san_andreas_super_cars_na_transformera.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185411_skachat_besplatno_i_bez_registracii_antivirus_avast_na_1_god.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024414.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24414 3556 bytes
font_01_sfnt_off00025197.bin
6745c54a8f1e180940e536005d87b5d3612903b4d6684109c674592296b70642		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25197 14356 bytes
font_02_sfnt_off00027e29.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E29 14468 bytes
font_03_sfnt_off0002a8db.bin
813aab488e4c5064198bb0faa6008e6b81a9cc56622bfcc45c112f216a443d5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8DB 7048 bytes
font_04_sfnt_off0002bd4d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD4D 6084 bytes
font_05_sfnt_off0002cce2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCE2 3752 bytes

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