Malicious PDF — malware analysis report

Static analysis result for SHA-256 5857fe913da594de…

MALICIOUS

PDF

187.7 KB Created: 2015-07-23 20:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9e58c1d4d8092941de28d01914d26fe8 SHA-1: 87ea3d7926e818f0200ddb87669e4240de6df76e SHA-256: 5857fe913da594de0c236369fa35354e8b2b7b6f3413531b060ca799e6d8f75f
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL points to 'http://botcraftman.ru/', which is likely used to redirect users to a malicious website. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact 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%93%D0%B5%D1%80%D0%BE%D0%B8+%D0%BC%D0%B5%D1%87%D0%B0+%D0%B8+%D0%BC%D0%B0%D0%B3%D0%B8%D0%B8+3+%D0%B4%D1%8B%D1%85%D0%B0%D0%BD%D0%B8%D0%B5+%D1%81%D0%BC%D0%B5%D1%80%D1%82%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+mediaget&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184351_samouchitel_excel_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184376_skachat_besplatno_masha_i_medved_vse_serii_odnim_faylom.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183244_proekt_dachnogo_domika.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024702.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24702 3556 bytes
font_01_sfnt_off00025485.bin
dee4670f29e42616a706b0a88506bea13e5f568cfddfa7f53e276fa498fc8241		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25485 15044 bytes
font_02_sfnt_off000282f8.bin
25c461dd9f35f398a8606c6fe245a65805cb0456ac3b5c2cf335010869b4bacb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x282F8 14808 bytes
font_03_sfnt_off0002aebc.bin
4831b8d2295cf0a1fe85c4a6c9ac10fe758185b7a4279b86fc0b7ed1f0d7a177		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AEBC 7536 bytes
font_04_sfnt_off0002c4d3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C4D3 6084 bytes
font_05_sfnt_off0002d468.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D468 3752 bytes

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