Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea0e566390379852…

MALICIOUS

PDF

185.6 KB Created: 2015-08-08 09:42:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bfc5a9b4baa3acf3a7131e8a12a2ced3 SHA-1: ccb85db1d24b22fc9b9ae18cd8941fb235180573 SHA-256: ea0e566390379852c00da744857a1b5278afab7534225222cfb383cce678c479
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated 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 exact 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=santas+rampage+%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/6//4384/4384183_scenariy_dnya_rozhdeniya_18_let_docheri.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383828_propisi_dlya_1_klassa_raspechatat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384096_pbu_10_99_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a791.bin
d968309c221907520e6c8671a0bd9320a6e14b8cea95bad6c351609d6022eef8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A791 7240 bytes
font_00_sfnt_off00023ecf.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23ECF 3556 bytes
font_01_sfnt_off00024c52.bin
d603827f5f8dfaa4b49a3eb22df6e9f36cbdf71b0da99a044cee3dabcab3361f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C52 15192 bytes
font_02_sfnt_off00027b5d.bin
424b2a8fd48c7592f0cc6049264047842086460e30ea5ef1cc5a894f9f61b795		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B5D 14956 bytes
font_04_sfnt_off0002bc91.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC91 6084 bytes
font_05_sfnt_off0002cc26.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC26 3752 bytes

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