Malicious PDF — malware analysis report

Static analysis result for SHA-256 04afe26d4e897480…

MALICIOUS

PDF

184.2 KB Created: 2015-07-25 03:14:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c31e86b58cced57f95c3c05dd2360d58 SHA-1: 05272ba9a0f038322ad6ddff0147504b1f7a72a9 SHA-256: 04afe26d4e89748007aca4207224461e9a3dcca9c45b8b181bbc869884ceabe2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and contains a link to a known malicious redirector. This suggests the document is designed to trick the user into visiting a malicious site, likely for the purpose of downloading a second-stage payload. No scripts were extracted, but the presence of a malicious URL is a strong indicator of 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%94%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0+%D0%BD%D0%B0+%D0%B7%D0%B2%D1%83%D0%BA+%D0%BD%D0%B0+windows+7&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189594_skachat_chit_na_bessmertie_v_ks_16.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189259_outlook_2007_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192107_bustan_avaristan_kniga_skachat.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_off0002a33c.bin
67fc98126e35f68b0edfd6628e453d08d9125a276344302efd54cb0d33d5b8a9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A33C 6800 bytes
font_00_sfnt_off00023c43.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C43 3556 bytes
font_01_sfnt_off000249c6.bin
364a8e089cf0698952ab5a8a57dce9f092296b1989942ca58d28c4f1f2385a71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249C6 14936 bytes
font_02_sfnt_off0002781b.bin
91d4a5e70bb6505a4d7e49a94951645e049c5f6e4b7ec6b126e3d70fe325feef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2781B 14584 bytes
font_04_sfnt_off0002b6d4.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B6D4 6084 bytes
font_05_sfnt_off0002c669.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C669 3752 bytes

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