Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6bc146cbb40617c…

MALICIOUS

PDF

185.3 KB Created: 2015-08-08 09:30:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a605fc7ddcc6a1712b468b492a6d17cb SHA-1: 0e5f2b381cd3d187ca1c97c296a9ea21511330ee SHA-256: d6bc146cbb40617cdf4b9173333ed404d150a5758042d8dc99a4a661cdb34084
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL http://botcraftman.ru/... is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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%B2%D0%B8%D1%88%D0%B8%D0%B2%D0%BA%D0%B8+%D1%85%D1%80%D0%B5%D1%81%D1%82%D0%B8%D0%BA%D0%BE%D0%BC+%D1%81%D1%85%D0%B5%D0%BC%D0%B8+%D0%B1%D0%B5%D0%B7%D0%BA%D0%BE%D1%88%D1%82%D0%BE%D0%B2%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383767_skachat_plyey_market_na_nokiya_n8.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383732_delfinariy_na_russkom_ostrove.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383851_skachat_igru_pobeg_iz_kuryatnika.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000242c9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242C9 3556 bytes
font_01_sfnt_off0002504c.bin
c432f1f9699dd9c3466b042fa16393dd26ed7777d0a8883dd280de88bc260e68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2504C 14344 bytes
font_02_sfnt_off00027d71.bin
c79a47bdca8ea8ebc7963890061ec39ae74a2cb29f605a9df029783aaf240e90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D71 14804 bytes
font_03_sfnt_off0002a899.bin
0fb47ff4444131a37fcb873874ef60d65a6ec72ae331d6af4f444fdde7efc339		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A899 6584 bytes
font_04_sfnt_off0002bb54.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB54 6084 bytes
font_05_sfnt_off0002cae9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAE9 3752 bytes

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