Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fef87bbe97a06c7…

MALICIOUS

PDF

185.4 KB Created: 2015-07-24 12:53:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f3d158e3fa0c6b716c7b1416d6a5f3e3 SHA-1: 7cbadfb561621f31afae1f81586ae225231e9e09 SHA-256: 4fef87bbe97a06c7a5237db1d37c7c9d0f60aae8e251e1176072cb17115c5836
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 not sufficiently readable to determine a specific lure.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%87%D0%B8%D1%82+%D0%BD%D0%B0+%D0%B1%D1%80%D0%B8%D0%BB%D0%BB%D0%B8%D0%B0%D0%BD%D1%82%D1%8B+%D0%B4%D0%BB%D1%8F+pirate+storm&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192143_klyuchi_dlya_eset_smart_security_603046.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190253_kapuki_kanuki_skachat_vse_serii_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189021_drayvera_na_kontroller_universalnoy_posledovatelnoy_shinuy_usb.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a650.bin
83e96fea6798b122576a5097d1e23777c4895e4ec83d3a406916a8d1b75d9ac3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A650 7396 bytes
font_00_sfnt_off00023f7a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F7A 3556 bytes
font_01_sfnt_off00024cfd.bin
93586f8ced92559412c627d06395b7e1d141fb59728332f1f57a0f8f1d8b3198		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CFD 14708 bytes
font_02_sfnt_off00027ac9.bin
20b650e16548e6cc80f010dfe09511e4129913ca505b2d59126c0fafaad1b48b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27AC9 14744 bytes
font_04_sfnt_off0002bbeb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBEB 6084 bytes
font_05_sfnt_off0002cb80.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB80 3752 bytes

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