Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7266f1a896a1a00…

MALICIOUS

PDF

38.0 KB Created: 2020-08-18 19:02:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4efc79c39161f314b18957ee05fd8980 SHA-1: a27544923a31d6039485d0faaedab128935e4412 SHA-256: d7266f1a896a1a002297170af5614bb719f8fed286df2fac0da57cdbc1eeb20d
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous embedded URLs. One URL, 'https://ttraff.com/pify?keyword=bratstvo+crnog+bode%25C5%25BEa+4+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on CDNs. This suggests a campaign focused on SEO manipulation or redirecting users to potentially harmful content.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://ttraff.com/pify?keyword=bratstvo+crnog+bode%25C5%25BEa+4+pdf
    • http://nifuvepu.dragonflyguitarcoaching.com/uploads/1/3/0/7/130776445/vezelorabuxis.pdf
    • http://xurekaj.mixfruitonline.com/uploads/1/3/0/7/130775388/bewutudegu.pdf
    • http://sobalaf.travelogues.smifh.com/uploads/1/3/1/4/131454012/234825.pdf
    • https://cdn.shopify.com/s/files/1/0433/8103/1064/files/78115894465.pdf
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/91923870333.pdf
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/fenakegofilolukalene.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/cash_flow_statement_class_12_cbse.pdf
    • https://cdn.shopify.com/s/files/1/0431/6810/4610/files/60686730252.pdf
    • https://cdn.shopify.com/s/files/1/0434/4017/7308/files/51607536579.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/jinedanobasuxagifazopet.pdf
    • https://cdn.shopify.com/s/files/1/0437/1687/0296/files/writing_activities_for_kindergarten.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004573.bin
e4a574d8a91e38d60496adf24e252aaf3cb98e48a1c21debb31f33db896da856		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4573 5448 bytes
font_01_sfnt_off0000580e.bin
4e3c0f519f17c9646e91eb835e215a1e7c68476dc9393c1cf6e7f1eb813dacb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x580E 10472 bytes
font_02_sfnt_off00007bc6.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC6 4324 bytes

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