Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a73be33a05b2811…

MALICIOUS

PDF

185.1 KB Created: 2015-08-03 06:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0670ddbcd9598a913f2982b5e9dcee11 SHA-1: 3b60513bb054a387ab96564a2acbade16f71b2c7 SHA-256: 9a73be33a05b2811ec4f7592e28612fd0bb5eb969238de39e99c6f29e8ec3c4d
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector infrastructure. This indicates a phishing or social engineering attempt to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for the attack pattern.

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%BA%D0%B0%D0%BA%D1%83%D1%8E+%D0%BF%D1%80%D0%BE%D1%88%D0%B8%D0%B2%D0%BA%D1%83+%D0%BC%D0%BE%D0%B6%D0%BD%D0%BE+%D0%BF%D0%BE%D1%81%D1%82%D0%B0%D0%B2%D0%B8%D1%82%D1%8C+%D0%BD%D0%B0+iphone+3g&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4264/4264465_prohozhdenie_furdiburb.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4224/4224093_okrasuy_britanskih_koshek_tablica.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4229/4229589_vosstanie_devyati_kniga_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e2e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E2E 3556 bytes
font_01_sfnt_off00024bb1.bin
739b74bc8ebccc8b08596e5b6dff3b4512edfee6794a78a2a369b4f975e4ac4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BB1 14616 bytes
font_02_sfnt_off00027960.bin
5f47c2e0cf7a7acb943ae8291c47dee1e50dbe3ec44ce6bd96797ea526834d74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27960 14624 bytes
font_03_sfnt_off0002a44d.bin
793b4d7b02446f4da7bcbb2461a6b5ad787bf0b53024d700585dfc84a85cd47f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A44D 7676 bytes
font_04_sfnt_off0002baac.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAAC 6084 bytes
font_05_sfnt_off0002ca41.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA41 3752 bytes

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