Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a7f8f984ef96bc…

MALICIOUS

PDF

183.9 KB Created: 2015-08-08 09:42:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ee45ecaf9c2910dfffdf767880b9a8e6 SHA-1: bb02b87e660b574ea0db1a0bd01f19cd571cb9dc SHA-256: 70a7f8f984ef96bc52aeec6019b859ad301cb6ad3ce050e71203230aafcee0eb
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution 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%8D%D0%BC%D1%83%D0%BB%D1%8F%D1%82%D0%BE%D1%80+ipad+%D0%B4%D0%BB%D1%8F+windows&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384089_doktor_myasnikov_aleksandr_leonidovich_knigi_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384018_ya_tatarin_ya_tatarin_chelovek_prostoy_tekst.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384203_1s_predpriyatie_81_portable.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_off0002a27b.bin
6d06c679ac968294df23a2bd43da23f7c2477b49f0a419e15a5da2f0a65f228c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A27B 6764 bytes
font_00_sfnt_off00023aec.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23AEC 3556 bytes
font_01_sfnt_off0002486f.bin
384d0e486f193b35642241520b94fb39a4b7ed5013c58df00daae46470c7ec09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2486F 14976 bytes
font_02_sfnt_off000276d9.bin
464372f58b5a99ecc265c0e8a687ac9b093897f9cdb16b8773c22c343cadba9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x276D9 14768 bytes
font_04_sfnt_off0002b5f5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B5F5 6084 bytes
font_05_sfnt_off0002c58a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C58A 3752 bytes

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