Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1c2caec99e058fd…

MALICIOUS

PDF

185.8 KB Created: 2015-07-25 02:46:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a17acec1be492740ebb365f9c46fda5b SHA-1: fc69040150b06918de1b0a3a25cba035b7378dea SHA-256: e1c2caec99e058fd4efc5fa43a827b79ca3d291950ea1d3bc2b0460e7602a919
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, http://botcraftman.ru/. This suggests the document is designed to lure users to a malicious website. The presence of embedded fonts and streams is typical for PDF documents, but the malicious link is the primary indicator of compromise.

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=%D0%BF%D1%80%D0%BE%D1%85%D0%BE%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D0%B5+%D0%B8%D0%B3%D1%80%D1%8B+school+of+dragons&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192217_tarifuy_na_soderzhanie_i_remont_zhilogo_pomescheniya_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194723_madzhong_pokemonuy_skachat_igru_besplatno_bez_registracii.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185225_skachat_igru_gadkiy_ya_minion_rush_na_kompyuter.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a823.bin
b43aa2b15befd0ca11524c6c5c5c0a630bf6f8ca3f5cb0652a18ab008cdea6e4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A823 7244 bytes
font_00_sfnt_off00024030.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24030 3556 bytes
font_01_sfnt_off00024db3.bin
7334ad5d1821ce278a4006ec2494aeab1b434ed3afa63bc2ab06705f66f3c9e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DB3 15232 bytes
font_02_sfnt_off00027cc0.bin
72ca4856ed47e936ccff06ed94f930944d6d1b411d6b2cd1fde7805086840c1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CC0 14728 bytes
font_04_sfnt_off0002bd55.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD55 6084 bytes
font_05_sfnt_off0002ccea.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCEA 3752 bytes

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