Malicious PDF — malware analysis report

Static analysis result for SHA-256 678b083ae2e07c3f…

MALICIOUS

PDF

187.5 KB Created: 2015-07-25 20:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 51136738adef166b5c1e90ba037f66df SHA-1: 58605e20603b08ab4f2991a772349ccd1c45f5c4 SHA-256: 678b083ae2e07c3f86027fe23ba534e30ab4e90083aa55bdc215d3391ecc7d36
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. The embedded content appears to be malformed or truncated, preventing further analysis of its specific intent beyond the malicious URL.

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+adguard+%D1%81+%D0%B2%D0%B5%D1%87%D0%BD%D1%8B%D0%BC+%D0%BA%D0%BB%D1%8E%D1%87%D0%BE%D0%BC+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%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//4208/4208665_skachat_windows_7_32_bit_dlya_netbuka_oblegchennaya_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194582_kali_linux_instrukciya_po_primeneniyu.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184589_android_system_recovery_3e_instrukciya.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_off000247df.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247DF 3556 bytes
font_01_sfnt_off00025562.bin
e0ff778218b075f5053ecd0508907b89059053cb3b279daca8e472721900a7e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25562 14812 bytes
font_02_sfnt_off0002830e.bin
32f0a90bc8ec5694c7c6bbb1184a4d0a7a0b746f848c3df92411573197222846		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2830E 14468 bytes
font_03_sfnt_off0002adbb.bin
74f1f0c6e260afc88c3a39b2cb20a0acc94a3ead18a93fa3e40ea68b8e27037b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADBB 7664 bytes
font_04_sfnt_off0002c445.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C445 6084 bytes
font_05_sfnt_off0002d3da.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D3DA 3752 bytes

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