Malicious PDF — malware analysis report

Static analysis result for SHA-256 246ade791c6ec5f3…

MALICIOUS

PDF

186.8 KB Created: 2015-07-25 00:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: fcd8f4358d9055ffb87092e2590025e0 SHA-1: 48934858838d12aea0f7a7c992d894b96398b970 SHA-256: 246ade791c6ec5f30f1bfdf1795736761dfa54bdd4b4392abcf25c3036931d43
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. The primary malicious IOC is the URL http://botcraftman.ru/, which is likely used to deliver a secondary payload or redirect to a phishing site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%A2%D0%B0%D0%BC%D0%B0%D1%80%D0%B0+%D0%BF%D0%B5%D1%82%D0%BA%D0%B5%D0%B2%D0%B8%D1%87+%D0%BD%D0%B0+%D1%84%D0%BE%D0%BD%D0%B5+%D0%B7%D0%B2%D0%B5%D0%B7%D0%B4+%D0%B8+%D1%81%D1%82%D1%80%D0%B0%D1%85%D0%B0+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186966_avatar_legenda_o_korre_porno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189604_goluye_v_balete.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192668_skachat_geym_pleer_na_android.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000246a6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246A6 3556 bytes
font_01_sfnt_off00025429.bin
2c681def63a54adfd586a3500d80be3068b909bfb714d0696e1192064dc75118		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25429 14556 bytes
font_02_sfnt_off000281d9.bin
a6626c0bd3595dc776735a93968cf26fa9368d0e017313712711ccf7ec06347e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281D9 14532 bytes
font_03_sfnt_off0002acc9.bin
acbaa235f4622c18bf0566ccd923236ae61f99afb84227535070dade96786666		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACC9 7116 bytes
font_04_sfnt_off0002c189.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C189 6084 bytes
font_05_sfnt_off0002d11e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D11E 3752 bytes

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