Malicious PDF — malware analysis report

Static analysis result for SHA-256 6104c0fafae35ed4…

MALICIOUS

PDF

186.5 KB Created: 2015-07-24 09:02:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1b7258aa9555ce6ff1e8014a6d2186b1 SHA-1: d25906e9f26a9744c1b8f164252521112f4a0963 SHA-256: 6104c0fafae35ed44cfeb2021116bd1f40e7ead6b734245dfbd5167915e300ee
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is likely part of a phishing or malware distribution chain. No scripts were extracted, but the presence of a malicious link suggests an attempt to lure the user to a harmful site.

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%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+gta+5+%D0%BD%D0%B0+xbox+360+freeboot+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186725_otchet_po_proizvodstvennoy_praktike_buhgaltera.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185169_egye_po_fizike_2015_s_resheniem_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185834_gotovoe_portfolio_uchenika_9_klassa.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_off00024155.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24155 3556 bytes
font_01_sfnt_off00024ed8.bin
990ca48f7b96297c05d48e2a1a6718b93083a3cdff90c191aff32304d17af7c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24ED8 14992 bytes
font_02_sfnt_off00027d40.bin
908da4a9c9cd12de27ed176d86ee5615d2c065ae6829dfe33f8d1b5bf0373c82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D40 15048 bytes
font_03_sfnt_off0002a9c4.bin
5acf8a6e6e1f9886a19e3ad4256bdfa01812be57288277c9fc880a72b69fcace		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9C4 7600 bytes
font_04_sfnt_off0002c027.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C027 6084 bytes
font_05_sfnt_off0002cfbc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFBC 3752 bytes

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