Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfcf641f61a92c36…

MALICIOUS

PDF

186.3 KB Created: 2015-07-23 21:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: abea36b4457e59dfeb637001a0139b4d SHA-1: 21a2a8e1df584c46c1487b53555a7f406df8c5a8 SHA-256: bfcf641f61a92c3615548693c8c0c0ab55d9d036d8261c833a4f9f04b1f43610
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The primary malicious IOC is the URL http://botcraftman.ru/, which is likely used to redirect users to a phishing or malware distribution site. No scripts were extracted, and the document body was not readable.

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=%D1%82%D0%B0%D0%B1%D0%B5%D0%BB%D1%8C+%D0%B2%D1%8B%D1%85%D0%BE%D0%B4%D0%B0+%D0%BD%D0%B0+%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D1%83+%D0%B1%D0%BB%D0%B0%D0%BD%D0%BA+%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://img0.liveinternet.ru/images/attach/c/5//4184/4184703_portfolio_uchenika_nachalnoy_shkoluy_malchika_shablonuy_tachki.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184785_prohozhdenie_smerti_vopreki_2_odnim_dnem_zhivu.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184371_skachat_blok_launcher_pro_dlya_maynkraft_095.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024649.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24649 3556 bytes
font_01_sfnt_off000253cc.bin
6bf8f517da762fb0430eb5b5b153c65698cc54c4d1275862e3cdf89a934c64b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x253CC 14324 bytes
font_02_sfnt_off000280c5.bin
858de1ea0edee6589051d6c5805376be02fce034b392ea3476abe13984ffa707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280C5 14532 bytes
font_03_sfnt_off0002abb2.bin
544c0bff28594185da2ea258aa6b85447d51e7485f8ada6a2cfb175056d71ff5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABB2 6804 bytes
font_04_sfnt_off0002bf4c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF4C 6084 bytes
font_05_sfnt_off0002cee1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEE1 3752 bytes

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