Malicious PDF — malware analysis report

Static analysis result for SHA-256 09c1b7f3c8acee2c…

MALICIOUS

PDF

184.9 KB Created: 2015-07-24 11:30:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 220b768ed7eb0f92fd8969b652ffef7d SHA-1: 5c902b7d8f4ed0c9739589aa75bd9bbe8e22c185 SHA-256: 09c1b7f3c8acee2c2c8afa32e040d01b8441ea547948fe78e23432e9893d5694
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for delivering a second-stage exploit or malware. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7493565-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7493565-0
  • 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%91%D1%83%D1%81%D1%82%D0%B0%D0%BD+%D0%B0%D0%B2%D0%B0%D1%80%D0%B8%D1%81%D1%82%D0%B0%D0%BD+%D0%BA%D0%BD%D0%B8%D0%B3%D0%B0+%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//4184/4184828_skachat_mod_na_skayrim_stat_korolem_riverhelma.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191852_skachat_pult_dlya_televizora_lg_na_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190327_vse_vedmuy_ruyzhie_skachat_besplatno_fb2.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_off0002426b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2426B 3556 bytes
font_01_sfnt_off00024fee.bin
fa292380cc8727d55ac80382c14b76bf962ebff398c9bac533a6e00397ea8bc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FEE 14588 bytes
font_02_sfnt_off00027db5.bin
a9770cbb19a982a1ca245ae9dd57c2ebe78e8510dfe5e68aa43f25edc86204a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DB5 14468 bytes
font_03_sfnt_off0002a867.bin
52547b6df2695364a2278b3cde227a85526c3bca4baa915fd1ff41506e73066c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A867 6240 bytes
font_04_sfnt_off0002b9f6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9F6 6084 bytes
font_05_sfnt_off0002c98b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C98B 3752 bytes

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