Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7a14573f869c2c5…

MALICIOUS

PDF

185.6 KB Created: 2015-07-24 01:09:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: cff559da282b89799e87e4d94f15ba11 SHA-1: 5284540f6161b96bee780091e60702e5d6c152f4 SHA-256: b7a14573f869c2c542385c7f7895aba27a4861379a8b4c8633b07577f41108d8
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is designed to lead users to potentially harmful content. The ML classifier also strongly indicated maliciousness. The presence of embedded URLs and the PDF structure suggest an attempt to lure the user to an 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%BB%D0%B8%D1%86%D0%B5%D0%BD%D0%B7%D0%B8%D0%BE%D0%BD%D0%BD%D1%8B%D0%B9+%D0%BA%D0%BB%D1%8E%D1%87+%D0%B4%D0%BB%D1%8F+movavi+video+editor&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186883_ct_po_istorii_belarusi_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185502_licenzionnuyy_klyuch_dlya_vord_2007_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184571_reshat_primeruy_6_klassa_po_matematike.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023fff.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FFF 3556 bytes
font_01_sfnt_off00024d82.bin
23e9323927771b4d55954ad0179aede41364a3cb55b0c8547c96a4975b92265b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D82 14884 bytes
font_02_sfnt_off00027b6d.bin
c7cdd36815a74ccaa78af431eb0eeac0a637ff20605fa8009ada935df17ea2a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B6D 14792 bytes
font_03_sfnt_off0002a727.bin
9cf6abc4873c9bdbb683f0c9450ea748e0e7fceb51ac5b2f329fdb56c62bff5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A727 7384 bytes
font_04_sfnt_off0002bca3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCA3 6084 bytes
font_05_sfnt_off0002cc38.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC38 3752 bytes

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