Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cdd1564510bbd9b…

MALICIOUS

PDF

185.6 KB Created: 2015-08-08 09:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 125cfbb8c2328970748c0f372587cf57 SHA-1: db0a162fc3de8a5a6b0fba60ed82c7cda0cca01d SHA-256: 8cdd1564510bbd9b9548d351d76d24d1e432c5658d58467509db7b12ba92d1a6
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to download additional malicious content or redirect to a phishing site. No scripts were extracted from this sample.

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%83%D0%BC%D0%BD%D0%B0%D1%8F+%D0%BC%D1%83%D0%B7%D1%8B%D0%BA%D0%B0+%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//4384/4384211_windows_millennium_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383957_vuykroyki_burda_dekabr_2012_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383964_skachat_stalker_chistoe_nebo_sigerous_mod.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024312.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24312 3556 bytes
font_01_sfnt_off00025095.bin
8331b675682fbdef6263ac0c16169a829bc57bbeb5829bc1d36fbfb4d7a10ae9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25095 14592 bytes
font_02_sfnt_off00027e51.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E51 14468 bytes
font_03_sfnt_off0002a903.bin
45a7cb492b96222c683e2e0405ec72304a69e43b6440cf4008557f7602837210		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A903 6780 bytes
font_04_sfnt_off0002bc8d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC8D 6084 bytes
font_05_sfnt_off0002cc22.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC22 3752 bytes

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