Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b3a0dd9f30badd8…

MALICIOUS

PDF

184.8 KB Created: 2015-08-08 11:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 900094ec1e71d81bcdebdd820d9a7295 SHA-1: 05f12e661b7f329bb755d5292a80730c922ced15 SHA-256: 6b3a0dd9f30badd8e0c025a40473681d0e1674323394bd6201292fb72e887c6b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a known malicious redirector. The ML classifier also strongly indicates maliciousness. While no scripts were explicitly extracted, the presence of a malicious redirector suggests an attempt to lure the user to a site for further compromise, likely through a phishing or malware download lure.

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%BF%D0%BB%D0%B0%D1%89%D0%B8+%D0%B4%D0%BB%D1%8F+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+22x17+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384096_pbu_10_99_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384401_tekstovuye_kvestuy_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386346_klyuchi_k_igre_sedobnaya_planeta.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000240e3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240E3 3556 bytes
font_01_sfnt_off00024e66.bin
62a163f3d84df09ff22b60c336b35245402c38d0acb3bcaf8d82482485ddefc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E66 13940 bytes
font_02_sfnt_off00027a2c.bin
34afbc575e96378c15d13d9a30a5c9e071a183cd32b1340e0379e21a3a9de56b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A2C 14580 bytes
font_03_sfnt_off0002a54c.bin
60d986497d70b0eb460327e8b74677246db37d7a255c1f4ea05b93b0374b19ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A54C 6920 bytes
font_04_sfnt_off0002b94f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B94F 6084 bytes
font_05_sfnt_off0002c8e4.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8E4 3752 bytes

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