Malicious PDF — malware analysis report

Static analysis result for SHA-256 bacdec757082f21f…

MALICIOUS

PDF

184.4 KB Created: 2015-07-24 09:21:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b1d12fbe45755b1fcea7bffbabeaf802 SHA-1: 0a02f6b6282919e0f14736697b4b993f020541ee SHA-256: bacdec757082f21f6d75195735a623300d2329baaca90918a5ad5b0e46487401
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 containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirection. No scripts were extracted, but the presence of the malicious link suggests the document's purpose is to lure the user to a harmful external resource.

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%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D0%B7%D0%BD%D0%BE+%D0%BF%D0%BE+%D0%B1%D0%B8%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D0%B8+2015&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189666_skachat_seks_s_konem.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184464_asus_n750jv_drayvera_windows_7.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184876_windows_8_professional_x32_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023f53.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F53 3556 bytes
font_01_sfnt_off00024cd6.bin
96e0d69ea42a7952309aca50b33b7345157f39e9632a25d6bcbe8cedef951e18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CD6 14496 bytes
font_02_sfnt_off00027a12.bin
0d510f439a73eae665af138ecef4372c9b1dc55d02d5656a9604ccfb30fc5e3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A12 14640 bytes
font_03_sfnt_off0002a545.bin
030d52f6d3058ae661da53eee02f92c5159216514428db56a33324b225c8c7fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A545 6484 bytes
font_04_sfnt_off0002b7a1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7A1 6084 bytes
font_05_sfnt_off0002c736.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C736 3752 bytes

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