Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac14190ca23d894f…

MALICIOUS

PDF

187.5 KB Created: 2015-07-23 20:22:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f45e7c309bbbf37d44b15e0be2f87641 SHA-1: a575c829b4070e6b8592b273e0e1ecccf0a95353 SHA-256: ac14190ca23d894fa4a0a1437515de4c0917d980b3b483e05cf7d05bae2ac0e0
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 link to a known malicious redirector. This suggests the document is designed to lure users to a malicious website. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact lure.

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%B4%D0%B8%D0%BD%D0%B0+%D1%80%D1%83%D0%B1%D0%B8%D0%BD%D0%B0+%D0%B1%D0%B5%D0%BB%D0%B0%D1%8F+%D0%B3%D0%BE%D0%BB%D1%83%D0%B1%D0%BA%D0%B0+%D0%BA%D0%BE%D1%80%D0%B4%D0%BE%D0%B2%D1%8B+%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+fb2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183245_derevyannuyy_dom_proekt.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183246_model_idef0_primer.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183194_kursovoy_proekt_po_vodosnabzheniyu.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000246ef.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246EF 3556 bytes
font_01_sfnt_off00025472.bin
deeb07695395e22cb2eeb5c1e8c905a8d680e516ea936c5eddbd32efc2abc246		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25472 15032 bytes
font_02_sfnt_off00028362.bin
5539038e658857b7fa7c19e3efa7af582829fb115b0047a4cf3bc32c9050bebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28362 14696 bytes
font_03_sfnt_off0002aece.bin
2b221d5884917fdbb9e8045db6ecb2b143f298f1dbfb5b5ba4001204fbe93813		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AECE 7316 bytes
font_04_sfnt_off0002c43d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C43D 6084 bytes
font_05_sfnt_off0002d3d2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D3D2 3752 bytes

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