Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f3579ac7e7d221b…

MALICIOUS

PDF

184.4 KB Created: 2015-07-27 12:56:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 28338ff982b325dfd4366c9ac5631b4f SHA-1: 35d94160e3551c6f6d8976020d9ef857593606db SHA-256: 7f3579ac7e7d221bee89711980f227c7f171a455cb854bc8415462be734cc8b9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious due to a link pointing to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is likely part of a phishing campaign or a distribution point for further malware. No scripts were extracted, but the presence of the malicious link is a strong 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=the+forest+%D0%BA%D1%83%D0%BF%D0%B8%D1%82%D1%8C+%D0%BA%D0%BB%D1%8E%D1%87&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4224/4224230_mahinatoruy_11_sezon_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198804_skachat_aim_dlya_varfeys_besplatno_bez_sms_i_aktivacii_i_virusov.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4199/4199298_skachat_castle_crashers_v14_torrent_na_russkom.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_off0002a563.bin
ca97a31c42c90ada39246ab72fa2e97f2f126442825f56672afa864c2127ee70		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A563 6508 bytes
font_00_sfnt_off00023ca2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23CA2 3556 bytes
font_01_sfnt_off00024a25.bin
943606898df909958344bcf11baef4824d44509897ee8f6ae8515927b1e35147		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A25 15384 bytes
font_02_sfnt_off000279d5.bin
244d1dd55eae5290d7f117f33e763646ab96caacbbe8c2150c0e62725e7e3cc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x279D5 14776 bytes
font_04_sfnt_off0002b7f5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7F5 6084 bytes
font_05_sfnt_off0002c78a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C78A 3752 bytes

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