Malicious PDF — malware analysis report

Static analysis result for SHA-256 89885e9a61a99541…

MALICIOUS

PDF

188.5 KB Created: 2015-07-24 08:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 56038b81ccd5296f177fd767d0f903b3 SHA-1: d42cecfff3a1fc0fe58474da00f0676655988e4f SHA-256: 89885e9a61a99541c02008b13f51e2985184e0804a1d916490206716246f4f92
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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+%D0%BD%D0%B0%D0%B2%D0%B8%D1%82%D0%B5%D0%BB+%D0%B4%D0%BB%D1%8F+%D0%BD%D0%B0%D0%B2%D0%B8%D0%B3%D0%B0%D1%82%D0%BE%D1%80%D0%B0+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+windows+ce&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184869_skachat_vord_dlya_android.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185671_fallout_3_patch_17_dlya_russkoy_versii.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187212_skrapbuking_skachat_shablonuy.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_off0002b1a6.bin
0eeab43513b4b8d15d0b37900ed0e8da21b27787cf2b1c796d2b0a1b2f0f3e46		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2B1A6 7640 bytes
font_00_sfnt_off00024984.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24984 3556 bytes
font_01_sfnt_off00025707.bin
e44e654fbef5a8e49349b065a915c95c32dc6078894fcf7c7a0030b88e162eab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25707 15320 bytes
font_02_sfnt_off000286bc.bin
d42cffd6fe2b34e00baabfb68fa690536ec997643dfc88db0d5a65ab6968f10e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x286BC 14536 bytes
font_04_sfnt_off0002c81c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C81C 6084 bytes
font_05_sfnt_off0002d7b1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D7B1 3752 bytes

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