Malicious PDF — malware analysis report

Static analysis result for SHA-256 5298297d7131049f…

MALICIOUS

PDF

184.6 KB Created: 2015-07-23 20:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e021f8b3588621bbca2f446aaf35ce48 SHA-1: 3e99cc3c919bdff951f61c4c4cc6eb1b0d8dfbbb SHA-256: 5298297d7131049f03d38fe701f3ed5b6b5a9352e1634a495a1af434a79c39f1
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also flagged the PDF with high confidence. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8787049-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8787049-0
  • 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%92%D0%B7%D0%BB%D0%BE%D0%BC+%D0%B8%D0%B3%D1%80%D1%8B+injustice+%D0%BD%D0%B0+ios&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184436_blagodarstvennoe_pismo_studentu_za_prohozhdenie_praktiki_obrazec.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184682_new_roundup_4_teacher_s_book_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184551_vozvraschenie_na_tainstvennuyy_ostrov_2_klyuch.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a468.bin
1feae89141b8191bd3e50c69e0e5f5266cdf96e1f48f9f37e782be7bc067b087		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A468 7028 bytes
font_00_sfnt_off00023c34.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C34 3556 bytes
font_01_sfnt_off000249b7.bin
32f1f68fec61c07a650ad8726b9761ec4cd96d47f01bb5dc1aaa5064251e7f56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249B7 15312 bytes
font_02_sfnt_off000278ec.bin
0d51a8aae2c6490637946913b51987990c7a066a3644dc4a95067f0c1c2137a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x278EC 14888 bytes
font_04_sfnt_off0002b8b3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8B3 6084 bytes
font_05_sfnt_off0002c848.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C848 3752 bytes

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