Malicious PDF — malware analysis report

Static analysis result for SHA-256 aed12be893f51c62…

MALICIOUS

PDF

186.8 KB Created: 2015-07-23 20:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1948f4edfc8abfe6dc5767d5b9a0229b SHA-1: e89c569d3dd5a55d155926ee2f4b2242085ebd72 SHA-256: aed12be893f51c62c1eea8f6434b74718fece32b9f971d0a89920d427b864d59
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file was flagged by a machine learning classifier and contains a direct link to a known malicious redirector. This indicates the document is designed to trick the user into visiting a harmful site. The primary IOC is the malicious URL embedded within the document.

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=windows+7+64+bit+%D0%BC%D0%B0%D0%BA%D1%81%D0%B8%D0%BC%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+x64+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+2014&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183191_ladinec_shema_vuyshivki.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184333_krossvord_po_fizike_na_temu_magnitnoe_pole_s_otvetami.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183092_lebedi_shema_vuyshivki.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002aa22.bin
d1601498016943414ada82c25edcc7ca0b3024baef811716f31f1c6d0aecb04a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AA22 7784 bytes
font_00_sfnt_off000241f8.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241F8 3556 bytes
font_01_sfnt_off00024f7b.bin
cf72e7ebd065211d34524c046aa16d54480aab4b4d7f50e17c080216220ae165		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F7B 14892 bytes
font_02_sfnt_off00027e04.bin
2c35f8eaf74fe0641b9cc360177e6608ccdfe8c9717bdcb4b649bf10f1db972b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E04 14892 bytes
font_04_sfnt_off0002c148.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C148 6084 bytes
font_05_sfnt_off0002d0dd.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0DD 3752 bytes

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