Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea3e60032e1e019…

MALICIOUS

PDF

185.9 KB Created: 2015-08-08 09:55:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a8f83b288e4296445087b6f6983adb8d SHA-1: b76b7f40a11e044e908136c38794055a9fb1b2bf SHA-256: 6ea3e60032e1e019f59c2f38e2193cbfcf8132d7f86c6760d9d2c2a8cc1ad4ad
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL likely serves as the initial lure, directing users to a potentially harmful site.

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%B8%D0%B3%D1%80%D1%8B+%D0%BD%D0%B0+%D0%BF%D1%81%D0%BF+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+iso&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383815_skachat_bazu_paroley_dlya_bruta_mailru.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384337_voennaya_yepidemiologiya_metodichka.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383980_skachat_skins_1_sezon_torrent.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_off0002aa32.bin
26ae28aab283287d4e1b5161df883f20786cae2b97c4fcecda2f116576c1ba2f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AA32 6840 bytes
font_00_sfnt_off00024439.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24439 3556 bytes
font_01_sfnt_off000251bc.bin
93a92f85ce3edebce0b0f4a71d863b4d484a6bc0effd9c91210c7f4d69554631		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251BC 14776 bytes
font_02_sfnt_off00027f80.bin
598f66c1cc0f8596ff2bb610fb9b4d816aee06b244818b41362ffdd0327c3a06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F80 14468 bytes
font_04_sfnt_off0002bdd7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDD7 6084 bytes
font_05_sfnt_off0002cd6c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD6C 3752 bytes

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