Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8a60b5918505af6…

MALICIOUS

PDF

185.3 KB Created: 2015-07-26 18:03:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f91ab77a0a630d90d276adef2e140ee8 SHA-1: 49b9932944b8d9156f4c05c890b635794b2cd2f3 SHA-256: f8a60b5918505af66cf1a94cb17ecd518a8f6519c5e00a14d95470b69366f089
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of compromise, likely serving as a lure for further malicious activity. No scripts were extracted from this sample.

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%B2%D0%B8%D0%BD%D0%B4%D0%BE%D0%B2%D1%81+7+%D0%B4%D0%BE%D0%BC%D0%B0%D1%88%D0%BD%D1%8F%D1%8F+%D1%80%D0%B0%D1%81%D1%88%D0%B8%D1%80%D0%B5%D0%BD%D0%BD%D0%B0%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4214/4214290_skachat_mod_na_gta_4_policiya.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4219/4219699_skachat_programmu_dlya_vzloma_onlayn_igr_na_android.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185375_spravochnik_edinichnuyh_rascenok.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024232.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24232 3556 bytes
font_01_sfnt_off00024fb5.bin
d4be25489dcaad0e56ece32b112e4ac1c45eb1b648fadd6be72db49bba2b82af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FB5 14364 bytes
font_02_sfnt_off00027d03.bin
93a49ce87bd7d5cdfdacf89336ea2a7eb914e88732bff58cfe8ff35f5cf00ac7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D03 14568 bytes
font_03_sfnt_off0002a804.bin
c676d8a32d5c880826476eb6ab861b39a78f22da6281b105a8805ddea40812db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A804 6776 bytes
font_04_sfnt_off0002bb89.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB89 6084 bytes
font_05_sfnt_off0002cb1e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB1E 3752 bytes

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