Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b68202dea1cc476…

MALICIOUS

PDF

184.9 KB Created: 2015-07-23 21:12:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d42c156ae06b909d8990c568b8660bc2 SHA-1: b3a324be81ac5584f61224e618e5c89079126fcd SHA-256: 5b68202dea1cc4769a80257783748e68fb68a9462b532e9de06a148681fe0518
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were directly extracted, the presence of a malicious link suggests an attempt to lure the user to a site that likely hosts further malicious content or phishing forms. The document's metadata indicates it was generated by wkhtmltopdf, a tool sometimes abused for creating malicious PDFs.

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=%D1%81%D0%BF%D1%80%D0%B0%D0%B2%D0%BA%D0%B0+%D1%84%D0%BE%D1%80%D0%BC%D0%B0+182-%D0%BD+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184822_kod_aktivacii_dlya_kaspersky_internet_security_2015_na_365_dney.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184350_yesse_po_obschestvu_primeruy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184475_ppr_na_yelektromontazhnuye_rabotuy_skachat_besplatno.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023f7c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F7C 3556 bytes
font_01_sfnt_off00024cff.bin
1da9624e1c7d5be32117f363e952ecf97380457a4b7dada0c270392d4ccc4e43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CFF 14868 bytes
font_02_sfnt_off00027b1e.bin
b218fc28cb8adedab2776c974cea4eccf89ae0d9cff3c995927780afcbe7d380		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B1E 14468 bytes
font_03_sfnt_off0002a5d6.bin
8462d10a3836f26e14c2e95871037e56d3d1bf0a17d82dad22f7abf1b39725bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A5D6 6844 bytes
font_04_sfnt_off0002b9ac.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9AC 6084 bytes
font_05_sfnt_off0002c941.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C941 3752 bytes

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