Malicious PDF — malware analysis report

Static analysis result for SHA-256 b30b510eab7b0eef…

MALICIOUS

PDF

186.9 KB Created: 2015-07-24 01:39:19 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2a11ca8e0db70891ff566d5fda30e221 SHA-1: 611e45ddfa9a851c8ac3e48483f18ae3564e1695 SHA-256: b30b510eab7b0eef3c396e6e6863373fd645dc7e35ff9591184ab3e07ab9c0a4
92 Risk Score

Malware Insights

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

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 points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful external resource.

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%9E%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D0%B7%D0%B0%D1%8F%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BD%D0%B0+%D1%83%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%BD%D0%B8%D0%B5+%D0%BD%D0%B5%D0%B4%D0%BE%D1%81%D1%82%D0%B0%D1%87%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185552_liz_burbo_slushay_i_esh_doloy_kontrol_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184908_upstream_intermediate_b2_students_book_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185204_uchebnuye_zavedeniya_mchs_rossii_posle_9_klassa.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245e0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245E0 3556 bytes
font_01_sfnt_off00025363.bin
042424f243204e8d7f9a1cfe22743c16c550b3d8f4799ef495948f619afc92c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25363 15264 bytes
font_02_sfnt_off0002828c.bin
fbe4af72ea4b6832e02f3a94d39805fe74296d1f62d5d4f3c350b4dd983b7d89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2828C 14468 bytes
font_03_sfnt_off0002ad3a.bin
245beb10f957d38aa702d6f23a837cac46d213602d98882fe293cfcf67b25bde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD3A 7036 bytes
font_04_sfnt_off0002c1b5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1B5 6084 bytes
font_05_sfnt_off0002d14a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D14A 3752 bytes

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