Malicious PDF — malware analysis report

Static analysis result for SHA-256 13cef6843ca90736…

MALICIOUS

PDF

187.0 KB Created: 2015-07-24 05:03:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 7dc7454c607b5f98c6ab32fef210b400 SHA-1: 5587ad476a4b39b58b1bff0f3a3005f2ca601c22 SHA-256: 13cef6843ca90736dc86b63c2f3d80b74c91311978d9334d264a512dcc9677ae
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The embedded URL `http://botcraftman.ru/...` is highly suspicious and likely serves as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of a malicious link strongly suggests an attempt to trick the user into downloading a payload or visiting a malicious 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+%D0%B8%D0%B3%D1%80%D1%83+spider+man+edge+of+time+%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//4184/4184668_ati_mobility_radeon_hd_4570_drayver_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185836_vormiks_koduy_na_oruzhie_v_kontakte.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185639_marketingovuye_issledovaniya_kursovaya.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_off0002ab66.bin
8a3c9b19627e78748a9f87b0ad49240de55521fc393ebc88690596243eff9e21		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AB66 7772 bytes
font_00_sfnt_off000244a1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244A1 3556 bytes
font_01_sfnt_off00025224.bin
15f6a24e4765a232a43892f2e74b1746f9bc51cadecbbe6e10d362e13ac2860a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25224 14704 bytes
font_02_sfnt_off00027f86.bin
45991a00c0f31d367d77287d077d5cb23f1a583348032f87eb03d4c60eb1bb69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F86 14840 bytes
font_04_sfnt_off0002c249.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C249 6084 bytes
font_05_sfnt_off0002d1de.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1DE 3752 bytes

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