Malicious PDF — malware analysis report

Static analysis result for SHA-256 39035845236fd1cb…

MALICIOUS

PDF

182.8 KB Created: 2015-08-08 13:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a7d3043de4bf591a75394a86309718bf SHA-1: b4db218e5adadc572fd0a135ff65f9995815f485 SHA-256: 39035845236fd1cb9192b1ba0d1cd3f03125b849248f49b0d38ec04410f9ef2d
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is highly indicative of a malicious document. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is likely intended to lead the user to a site that will either deliver a second-stage payload or attempt to phish for sensitive information.

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=rlddll+pes+2012+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4391/4391978_krov_tamplierov_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4392/4392055_minecraft_1_4_2_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385991_kmsauto_net_2015_129_portable.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off00029ec8.bin
c0d6cc40aaa68c3037d0a3cbcf4127afc54a45f390f5f3e962ba972ed6517b7d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29EC8 6532 bytes
font_00_sfnt_off00023962.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23962 3556 bytes
font_01_sfnt_off000246e5.bin
3cea9616cf059ee712a28470131af7431a9d8fd517081c647895c19165425a0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246E5 14604 bytes
font_02_sfnt_off00027412.bin
ae2f89ff4addf235cec5d3ba3ae12387e8def61c6ac4d5a23541b04cc3b67138		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27412 14468 bytes
font_04_sfnt_off0002b182.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B182 6084 bytes
font_05_sfnt_off0002c117.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C117 3752 bytes

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