Malicious PDF — malware analysis report

Static analysis result for SHA-256 0549536a2113eb29…

MALICIOUS

PDF

186.2 KB Created: 2015-08-05 17:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b6e9c5ff1a4fb46bb5014eb754b968c3 SHA-1: e8f2c183c12367c070d586ec068e3a8fb5f7ccc1 SHA-256: 0549536a2113eb29b483983708818558d75ec0d3e058c531a95f3afb9c6edb61
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted, but the presence of a malicious link suggests an attempt to lure the user to a harmful 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=%D0%B1%D0%B0%D0%B7%D0%B0+%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85+%D0%B6%D0%B8%D1%82%D0%B5%D0%BB%D0%B5%D0%B9+%D1%81%D0%B0%D0%BD%D0%BA%D1%82-%D0%BF%D0%B5%D1%82%D0%B5%D1%80%D0%B1%D1%83%D1%80%D0%B3%D0%B0+%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//4304/4304530_skachat_parkur_mod_dlya_gta_sa.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305518_igra_lovi_volnu_skachat_besplatno_polnuyu_versiyu.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304521_dogovor_kupliprodazhi_zemelnogo_uchastka_s_rassrochkoy_platezha.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_off000242e3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242E3 3556 bytes
font_01_sfnt_off00025066.bin
183dd56a2ac33562ded50d3e23ba43f65876f6c4c3193eaca67376fe8bc2e3d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25066 15036 bytes
font_02_sfnt_off00027f2c.bin
38f85fdf71d103e7bb689174156f38a76f8b2a691e1fa490e8543a8c80077484		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F2C 14532 bytes
font_03_sfnt_off0002aa1f.bin
f1514495ec7a2a062891bb4ceca5fa6a330a50a533cec524ddb10eb167c44538		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA1F 7196 bytes
font_04_sfnt_off0002bf03.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF03 6084 bytes
font_05_sfnt_off0002ce98.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE98 3752 bytes

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