Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b903ef8c5d24a50…

MALICIOUS

PDF

185.2 KB Created: 2015-08-05 17:56:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2a57541218ab95ccdae3fd75ff38e3b6 SHA-1: 2d199fc140f7ae27559bf735e5824adc86d648a4 SHA-256: 6b903ef8c5d24a501db1a79305296c517ecdf9da6e07f82be9606312ce533702
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 strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL is a high-confidence indicator of malicious intent.

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%9F%D0%B5%D1%81%D0%BD%D0%B8+%D0%BA%D0%B0%D1%80%D0%B0%D0%BE%D0%BA%D0%B5+%D1%81%D0%BE+%D1%81%D0%BB%D0%BE%D0%B2%D0%B0%D0%BC%D0%B8+%D0%B4%D0%B5%D1%82%D1%81%D0%BA%D0%B8%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305430_armiya_spaseniya_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306711_navitel_karta_rossii_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306019_igruy_na_telefon_nokia_x200_skachat_besplatno_polnuye_versii.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_off000242e8.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242E8 3556 bytes
font_01_sfnt_off0002506b.bin
52c2bbabcdc444dd29d2fccd8fd9514fa42fffb96f7f8b0e768167b2e0573159		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2506B 14684 bytes
font_02_sfnt_off00027e1b.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E1B 14468 bytes
font_03_sfnt_off0002a8ce.bin
7250e1aa7149a410278b93f6a1b1c97f42f3e21a88f6bb3e9955099bf5a09928		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8CE 6384 bytes
font_04_sfnt_off0002bae5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAE5 6084 bytes
font_05_sfnt_off0002ca7a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA7A 3752 bytes

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