Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d9177287e50eefb…

MALICIOUS

PDF

185.8 KB Created: 2015-07-25 12:23:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e9898d700ee9731fad1bde993ab19303 SHA-1: 0f7b9ec8228f3e0516206041f61828cfc7c9b3b2 SHA-256: 8d9177287e50eefb33c7bf098faad0ae7c6df88bbe1f451731528e67fed5b66f
92 Risk Score

Malware Insights

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

The PDF file contains an embedded link that points to a known malicious redirector. This indicates a phishing attempt designed to lure the user to a compromised or malicious website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, limiting the analysis of further malicious behavior.

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+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83+app+store+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194334_fomenko_i_nosovskiy_novaya_hronologiya_video_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197792_skachat_film_zvonok_3_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4202/4202501_russkouzbekskiy_perevodchik_tekstov.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a87e.bin
a9b3f3c6e477481b53c34be682e22f9bed4e9f23576d5e88d4d72dde5349cd1f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A87E 7156 bytes
font_00_sfnt_off00024298.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24298 3556 bytes
font_01_sfnt_off0002501b.bin
dbb40cf06716b47e0effdd66257c64f55ab10a5ba019081d014db517a9183a91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2501B 14628 bytes
font_02_sfnt_off00027d6d.bin
a00133712ccb58aa9393f09a2c637e367db543224dab8e63c04f97918499f718		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D6D 14576 bytes
font_04_sfnt_off0002bd48.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD48 6084 bytes
font_05_sfnt_off0002ccdd.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCDD 3752 bytes

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