Malicious PDF — malware analysis report

Static analysis result for SHA-256 65efae77da015d83…

MALICIOUS

PDF

186.0 KB Created: 2015-07-24 11:27:08 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 39b035383a48870442cfee4e5f3c727c SHA-1: 4456e6a8adb967cb7471a788998e4d91e21b02db SHA-256: 65efae77da015d831bef745d7d0475d21173fb15e4ea898fae7011391b19cb0b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a 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. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

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=xinput1_3dll+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B4%D0%BB%D1%8F+windows+7&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184958_ustanovit_programmu_yeksel_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188379_skachat_whatsarr.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184790_skachat_profil_dlya_call_of_duty_4_modern_warfare_55_uroven.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a76b.bin
d6ef11781037ae76eee2b6f597f56cdcf49575604db01edfd6242a2dd7407a00		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A76B 7652 bytes
font_00_sfnt_off000240a6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240A6 3556 bytes
font_01_sfnt_off00024e29.bin
f54568c17c8c17657a95d2a93a9514760e1668f86765667b289a67ad0d4cb758		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E29 14832 bytes
font_02_sfnt_off00027bcb.bin
7d7385c5a3722c5364a8ab053b08c95ac138afdab906c5e978b5f761795867cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BCB 14732 bytes
font_04_sfnt_off0002be38.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE38 6084 bytes
font_05_sfnt_off0002cdcd.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDCD 3752 bytes

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