Malicious PDF — malware analysis report

Static analysis result for SHA-256 4629aad7eb9e05ad…

MALICIOUS

PDF

186.7 KB Created: 2015-07-24 03:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1c381b49a3fb8014de7baf7e78ec691a SHA-1: 443a7319bee011a924b1189cc8f46f102a27b00d SHA-256: 4629aad7eb9e05ad31ecabaac9c65afaec7393d79d79cbb4d8badb532d273358
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirects. 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=the+sims+3+%D0%BA%D0%BE%D0%BB%D0%BB%D0%B5%D0%BA%D1%86%D0%B8%D1%8F+19+%D0%B2+1+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%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//4184/4184599_microsoft_office_portable_dlya_windows_8.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184936_kak_uznat_anonima_v_ask_fm_zip.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184930_shemuy_vuyshivki_krestom_besplatno_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ab79.bin
13d98eb5b32147052bee07ef0b7f24ea12b5543dca2e21a812414263ca29f794		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AB79 7332 bytes
font_00_sfnt_off00024454.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24454 3556 bytes
font_01_sfnt_off000251d7.bin
842db364668765e5a1c6b23f641f687492f43918ce30220b81c20f873496f75b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251D7 14984 bytes
font_02_sfnt_off00028032.bin
2a486c27c13ef215286f0a2c90993076c1537ae660e444dfae7b515356156e3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28032 14732 bytes
font_04_sfnt_off0002c0e8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0E8 6084 bytes
font_05_sfnt_off0002d07d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D07D 3752 bytes

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