Malicious PDF — malware analysis report

Static analysis result for SHA-256 56cf39d498da5996…

MALICIOUS

PDF

184.0 KB Created: 2015-08-08 10:35:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e843fc96ed1e247497f665fbc91c124c SHA-1: 6e8283b214bee7701206f11b7dd301f2feda9dfd SHA-256: 56cf39d498da59968f89f95f59a64a788139726dd37b2b81f97caa5b5a7515a1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL, http://botcraftman.ru/?lip&keyword=adobe+flash+player++windows+phone+7&charset=utf-8, is designed to lure users into downloading malicious content by impersonating a legitimate software update. The ML classifier also strongly flagged this PDF as malicious.

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=adobe+flash+player++windows+phone+7&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384809_dead_space_2_russkaya_ozvuchka_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385915_drayver_dlya_asus_x55u.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384510_knigi_o_vedmah_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a310.bin
9e06ee4089c80484b682d34659b23895eee7eb5f642c8f9faf0b911e7f024f58		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A310 6640 bytes
font_00_sfnt_off000239c8.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x239C8 3556 bytes
font_01_sfnt_off0002474b.bin
a07cf9745284874dd1e7034fbb706b6208f0fd33db1fee3a36fe3908bf2ab15f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2474B 15496 bytes
font_02_sfnt_off00027716.bin
4b48f1d3bac3296b0d0be3d2730ca1b3a977a3599a166cdae2c54fb671a25fd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27716 14912 bytes
font_04_sfnt_off0002b617.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B617 6084 bytes
font_05_sfnt_off0002c5ac.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5AC 3752 bytes

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