Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a6fb99dc0ed289…

MALICIOUS

PDF

184.1 KB Created: 2015-08-08 12:35:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b3accaec71ddca37b194d884c0d6a766 SHA-1: e00a80de7fed5e6b097824f5bc1d00ce8a733669 SHA-256: 69a6fb99dc0ed2890d8b24f8c0d5c30be0685da4cb7eacca630d872a5de96af2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a malicious redirector. This indicates the document's primary purpose is to lure the user to a potentially harmful site. The ML classifier also strongly suggests maliciousness. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of a malicious intent.

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%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0+%D0%B4%D0%BB%D1%8F+samsung+r425&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386995_skachat_muzuyku_yey_tolstuyy.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386613_skachat_klip_oppa_gangnam_style.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387462_proekt_kontrakta_po_44fz_obrazec_zakupki_kostyumov_dlya_vrachey.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a1b2.bin
5fadd32ad5a8bf549c373eb34a603fc3d723a7e534de02578e08224f0c4501db		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A1B2 7180 bytes
font_00_sfnt_off00023c8c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C8C 3556 bytes
font_01_sfnt_off00024a0f.bin
80cba294f487757e38ced9f4711b1141640d19f3b6d2395404ec0bf1e5c0023f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A0F 14212 bytes
font_02_sfnt_off0002760b.bin
576b8ccf81bbe976d33b695978fe57c7b54c4880e84eadeb7472d0d4b652a1ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2760B 14808 bytes
font_04_sfnt_off0002b697.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B697 6084 bytes
font_05_sfnt_off0002c62c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C62C 3752 bytes

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