Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a5ce23c3974de6d…

MALICIOUS

PDF

51.3 KB Created: 2020-08-25 00:04:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78ff8b08935c6cabddbc37519aa6652a SHA-1: 5977fa3457a9f95aeeaf686a4634023ddcc3c98a SHA-256: 3a5ce23c3974de6d0df45dc088dfb51d04de701d06adc9c47386a66c3dbb1a02
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many pointing to shopify.com, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests the document is designed to lead users to malicious content, likely for phishing or to download further malware. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector and the link farm heuristic strongly indicate a malicious intent.

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=android+webview+load+from+assets
    • http://files.trevanitruffles.net/uploads/1/3/1/4/131453278/nixafafipozuzupiko.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/bandar_aur_magarmach_ki_kahani.pdf
    • https://cdn.shopify.com/s/files/1/0443/9041/6550/files/javascript_learning_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/3265/8588/files/astyanax_mexicanus.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/13876938669.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/nafutafe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4704/2728/files/rutiveparo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/john_mayer_torrents.pdf
    • https://cdn.shopify.com/s/files/1/0432/3747/4466/files/bnm_ccris_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/26251575486.pdf
    • https://cdn.shopify.com/s/files/1/0432/8695/4139/files/entrepreneurship_development_book_by_senthil_download.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_off00006a4d.bin
fb113468f92c25f7124d8e6e7ceb465cda016f2d652caed03d1c9280e8906ad2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4D 5336 bytes
font_01_sfnt_off00007c6d.bin
69c6771be504efc96fea0ac31ecb507f3afb83db31d9405e7b76bbaa6b132f1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6D 15072 bytes
font_02_sfnt_off0000ab79.bin
f1368e0d82604bf55bb40b01ac61c381dd14042cff43d793d5e70c6199447dc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB79 16088 bytes

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