Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eaaaefe3afd3c46…

MALICIOUS

PDF

186.1 KB Created: 2015-07-24 09:11:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 047e459533b99860b857229bc8ad5589 SHA-1: 1efd8e43c3a193c9a5a153acfc923ce696631779 SHA-256: 9eaaaefe3afd3c4688092e740878a633a3ff07abe37ae83da435481d1b60d458
90 Risk Score

Malware Insights

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

The PDF file 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 points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted, but the presence of the malicious link strongly suggests a phishing or malware delivery attempt.

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%A4%D0%BE%D1%80%D0%BC%D0%B0+%D0%BC+29+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D0%B7%D0%B0%D0%BF%D0%BE%D0%BB%D0%BD%D0%B5%D0%BD%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186274_rezultatuy_egye_po_russkomu_yazuyku_2015_kemerovskaya_oblast.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184457_spravka_o_srednem_zarabotke_dlya_centra_zanyatosti_blank_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187355_skachat_anime_hvost_fei_cherez_torrent_vse_serii.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024556.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24556 3556 bytes
font_01_sfnt_off000252d9.bin
6cee058da7ed9c75d846de63450260d7e7553fc596b3198cd1b8cdc4d14ed425		 pdf-font-stream PDF embedded font (sfnt) at offset 0x252D9 14472 bytes
font_02_sfnt_off00028069.bin
3e268af2f00fba4c9784e46dff9d8155a7a51c5170d1737d5e65e0b0b9768934		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28069 14468 bytes
font_03_sfnt_off0002ab1b.bin
43709366c9ee42ed6c03fd3798c45e83264cf57c3c4051e98942a515def219ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB1B 6736 bytes
font_04_sfnt_off0002be73.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE73 6084 bytes
font_05_sfnt_off0002ce08.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE08 3752 bytes

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