Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d75890ee4fd2701…

MALICIOUS

PDF

184.9 KB Created: 2015-07-23 21:09:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2a140b0c1f769ca8fcedef2c3b2299d6 SHA-1: 858258a7e3441b5a7cb7af651724007949817371 SHA-256: 5d75890ee4fd27011cc6ec550947a20c66b2696328a8597bbadc9e8ea1e32beb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains an embedded URL that redirects to a known malicious domain, indicating it's likely a dropper or downloader for further malicious activity. The presence of embedded URLs and the nature of the detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7494095-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7494095-0
  • 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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+autoclicker+seosprint&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183185_lada_kalina_shema_yelektricheskaya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184495_uroki_po_russkomu_yazuyku_5_klass_laduyzhenskaya_fgos.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184816_mortal_kombat_3_ultimate_skachat_na_pc_torrent.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_off0002a5e9.bin
6c6faf36789848def32981414ebc73abfdec6c1545b53caf9ca24bf5f423b0bf		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A5E9 6872 bytes
font_00_sfnt_off00023ecf.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23ECF 3556 bytes
font_01_sfnt_off00024c52.bin
5913f5b14bce96589de23ce3decb2159d126db5ca14a45719eb16005cb39fcfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C52 15104 bytes
font_02_sfnt_off00027ae2.bin
b1c510636797b80c3147f2cd252f9360b5017bd8adc9152ace55f8c5ed7b3c82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27AE2 14576 bytes
font_04_sfnt_off0002b9d1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9D1 6084 bytes
font_05_sfnt_off0002c966.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C966 3752 bytes

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