Malicious PDF — malware analysis report

Static analysis result for SHA-256 999fe84c3a5c8ce1…

MALICIOUS

PDF

186.7 KB Created: 2015-08-08 09:37:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e6c99bb8bc95c99ce037cca49f460e90 SHA-1: 2d3a2588279402a9729050caf8c5ee0ba48a6b3f SHA-256: 999fe84c3a5c8ce1b1367eb589883ec3e6adfec6d775ef793abe27bb6355e97e
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The ML classifier also flagged the PDF with high confidence. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or malware distribution attempt.

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=microsoft+office+world+2007+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B4%D0%BB%D1%8F+windows+8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383724_riven_gayd_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383770_skachat_gta_san_andreas_13_rayon.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383955_skachat_programmu_na_dengi_tdp4.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a938.bin
7309e57917cf257d47aa56c3887d74ea2447112c87d13518752b9c4ae8f8806c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A938 8008 bytes
font_00_sfnt_off000241ae.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241AE 3556 bytes
font_01_sfnt_off00024f31.bin
c23a8f6e9f415f1f01ede795ba9ef766794ff0fbaa859f5b02ed004b76ad5546		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F31 14856 bytes
font_02_sfnt_off00027d67.bin
781ccd2edcac3570acc16f15895ad54ffcdc79ee18a27e200988860bacc5d1f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D67 14796 bytes
font_04_sfnt_off0002c112.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C112 6084 bytes
font_05_sfnt_off0002d0a7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0A7 3752 bytes

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