Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbbcee331a585cd7…

MALICIOUS

PDF

190.3 KB Created: 2015-07-25 03:08:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d8a861051daf9121caca0b655efad1a6 SHA-1: cb40659d2df97c6f8c94729feec5a9f5704826bc SHA-256: bbbcee331a585cd7be1143592d60b763c86ff64b2f4610379227817dba2097ed
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent. The file was authored by wkhtmltopdf, which can be used to generate PDFs from web content, potentially for phishing lures.

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%9E%D1%82%D0%B7%D1%8B%D0%B2+%D1%81%D1%82%D1%83%D0%B4%D0%B5%D0%BD%D1%82%D1%83+%D0%BE+%D0%BF%D1%80%D0%BE%D0%B8%D0%B7%D0%B2%D0%BE%D0%B4%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE%D0%B9+%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D0%BA%D0%B5-+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197247_skachat_mentovskie_voynuy_5_sezon_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193134_skachat_drayver_dlya_lenovo_wifi.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197877_koduy_na_gta_sanandres_na_mashinuy_iz_forsazha.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00025486.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25486 3556 bytes
font_01_sfnt_off00026209.bin
8c3d9b2a5cb812a34e9e8af6a0e81f5f5148ed0ce3dad66bd1972b44dd019f8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26209 14752 bytes
font_02_sfnt_off00029076.bin
25c6e01570ccaff1d4a42c9e9cdfd09f1d8419efdfec7b1260b18abfcc753208		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29076 14468 bytes
font_03_sfnt_off0002bb2b.bin
98a5faa3b208f93ce658d3ea4735cf70459df406efd9cadaf4a2cc63313ae5e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB2B 6968 bytes
font_04_sfnt_off0002cf50.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF50 6084 bytes
font_05_sfnt_off0002dee5.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DEE5 3752 bytes

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