Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd90d6c8d492f7da…

MALICIOUS

PDF

189.1 KB Created: 2015-07-24 20:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0cba63449b23ee1d78c7f0a11cbf27e5 SHA-1: 23c319eb9c3925dc22f490005ed0098583e23e94 SHA-256: cd90d6c8d492f7dade3afcb89923b0d6f2a178c123c2fa97a5d5ebb684a62221
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 strongly indicated maliciousness. The primary IOC is the malicious URL, which is likely used to deliver a secondary payload or redirect to a phishing page. No scripts were extracted, limiting further analysis of the execution chain.

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%B0%D0%BD%D0%B8%D0%BB%D0%B5%D0%B2%D1%81%D0%BA%D0%B8%D0%B9+%D1%80%D0%BE%D1%81%D1%81%D0%B8%D1%8F+%D0%B8+%D0%B5%D0%B2%D1%80%D0%BE%D0%BF%D0%B0+%D0%BA%D1%80%D0%B0%D1%82%D0%BA%D0%BE%D0%B5+%D1%81%D0%BE%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%BD%D0%B8%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190133_skachat_server_dlya_maynkraft_152_bez_plaginov.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191560_skachat_pover_point_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185424_skachat_syempluy_dlya_fl_studio_10_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00025107.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25107 3556 bytes
font_01_sfnt_off00025e8a.bin
bd0e76d1a32b72d89937586d0d63002daeca0f790e31879ab10792c303be837e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25E8A 14760 bytes
font_02_sfnt_off00028cb3.bin
b79d56b22a3d37edc4793e81e28af2d51416733c1decb699be69ae0b1e9dff38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28CB3 14468 bytes
font_03_sfnt_off0002b762.bin
0fc7c29e392441221b51eb5a98b225d021573defed68378fced490cd229c5238		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B762 6772 bytes
font_04_sfnt_off0002caad.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAAD 6084 bytes
font_05_sfnt_off0002da42.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA42 3752 bytes

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