Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fb16abd9c3fea3f…

MALICIOUS

PDF

183.5 KB Created: 2015-08-05 14:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 7cca7c35c6899a0bc0678c39d6bd77c3 SHA-1: ac1d0944b26108f2da07eb741c2d91b3c19a3d3c SHA-256: 5fb16abd9c3fea3f11d23ed4632636749d65db66325fbb2e414899886a09c987
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of a phishing or malware distribution attempt.

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=%D0%BF%D0%BE%D1%80%D0%BD%D0%BE+%D0%BC%D0%B0%D0%BC%D0%B0+%D0%B8+%D1%81%D1%8B%D0%BD+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304804_prikaz_mchs_545_ot_22092009.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304642_igruy_pk_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304436_obrazec_zayavleniya_na_ezhegodnuyy_otpusk.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e06.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E06 3556 bytes
font_01_sfnt_off00024b89.bin
fb37aa86f287609ea5f8397223a8f56568ba2b5c633e47bbc423e0752f128903		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B89 14024 bytes
font_02_sfnt_off000277dd.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x277DD 14468 bytes
font_03_sfnt_off0002a28f.bin
3d7979ca396d4b0fbea3884e17a13484ea1ab52abd1f9370b940b848a9f4e875		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A28F 6256 bytes
font_04_sfnt_off0002b427.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B427 6084 bytes
font_05_sfnt_off0002c3bc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3BC 3752 bytes

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