Malicious PDF — malware analysis report

Static analysis result for SHA-256 04542f40f606b145…

MALICIOUS

PDF

185.2 KB Created: 2015-07-24 14:41:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e4fbb3b9ed879c5669d877777868b38f SHA-1: d1e07d81b22fb701ef8bcc32cea109696c4e8eb9 SHA-256: 04542f40f606b145f04ebc64b52276449b4ca5f00969fe15220aa7ec29729edd
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is a strong indicator of malicious intent. The ML classifier and ClamAV detection further support this, identifying the file as a malicious dropper. While no scripts were explicitly extracted, the PDF structure and embedded link suggest it's designed to lure the user to a malicious site, likely for phishing or to download further malware.

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-8732012-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8732012-0
  • 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=%D0%BA%D1%80%D0%B8%D1%88+2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187210_skachat_vanquish_2004_prohozhdenie_video.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191619_kalkulyator_rascheta_otpusknuyh_v_2015_godu_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192229_skachat_subway_surfers_rio_na_kompyuter.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_off000240fd.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240FD 3556 bytes
font_01_sfnt_off00024e80.bin
16ca84845e81a0a7eed7ce6be6a71d430aa47f0a5da226e53aeac205ac04abdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E80 15484 bytes
font_02_sfnt_off00027e12.bin
9576353abb4e2cf3360eec5398b99ce0ef8d02a10cf5edb117997219c6dfa553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E12 14520 bytes
font_03_sfnt_off0002a8e5.bin
173d36dddf123ac4f9aa2f1d12dc41a37cce3ea7997b72330a00de4267150a21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8E5 6408 bytes
font_04_sfnt_off0002bafe.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAFE 6084 bytes
font_05_sfnt_off0002ca93.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA93 3752 bytes

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