Malicious PDF — malware analysis report

Static analysis result for SHA-256 df764cad34e6e46f…

MALICIOUS

PDF

186.6 KB Created: 2015-08-05 16:35:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0efe72b83a5662474d83b8a30a07cf28 SHA-1: f86c6b590d1ed0b2ce175170c1e3fadffd9d05a2 SHA-256: df764cad34e6e46f9c18415b149dcdcb9df726e3283b2a5da9ba2e23ec7b6195
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical alert for a link to known malicious redirector infrastructure. The primary malicious IOC is the embedded URL, which likely serves as a lure to a phishing or malware distribution site. No scripts were extracted, but the PDF structure and the malicious link strongly indicate a phishing or redirection attack.

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-8790024-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8790024-0
  • 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%80%D1%83%D0%BA%D0%BE%D0%B2%D0%BE%D0%B4%D1%81%D1%82%D0%B2%D0%BE+%D0%BF%D0%BE+%D1%80%D0%B5%D0%BC%D0%BE%D0%BD%D1%82%D1%83+%D1%81%D1%83%D0%B1%D0%B0%D1%80%D1%83+%D1%84%D0%BE%D1%80%D0%B5%D1%81%D1%82%D0%B5%D1%80&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306057_biohimicheskiy_analiz_krovi_rasshifrovka_u_detey_tablica.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305297_skachat_i_poslushat_veseluyu_tancevalnuyu_muzuyku.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305996_portfolio_uchenika_nachalnoy_shkoluy_shablonuy_cherno_beluye.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024776.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24776 3556 bytes
font_01_sfnt_off000254f9.bin
72bbe2ebb89614178c9c12c975a391a4791383c3fd42fb6459c8cae835c2fc04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x254F9 14576 bytes
font_02_sfnt_off00028287.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28287 14468 bytes
font_03_sfnt_off0002ad3a.bin
003845f844a58d83d39d47fc0402f0e09837777cba15944c8fb376c048f501a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD3A 6748 bytes
font_04_sfnt_off0002c0a6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0A6 6084 bytes
font_05_sfnt_off0002d03b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D03B 3752 bytes

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