Malicious PDF — malware analysis report

Static analysis result for SHA-256 e33af86ba0fc0bb2…

MALICIOUS

PDF

49.0 KB Created: 2020-08-16 00:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 532014628d51e643e5c17d5d1a6c100d SHA-1: d59a1727e885ec970fedd6252827e82a5733da32 SHA-256: e33af86ba0fc0bb2052e3f6f2964280ba2b0a95972fcc7bfc3faa117031d0648
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm with 22 external PDF links, many hosted on Shopify, and one link pointing to a known malicious redirector. This suggests a tactic to manipulate search results or distribute further malicious content. The document body itself is heavily obfuscated and contains the malicious redirector URL.

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.cc/pify?keyword=bigbury+bantham+surf+report
    • http://files.bitsbottlesbush.com/uploads/1/3/1/4/131453255/zemijojusas.pdf
    • http://files.amandatolentino.com/uploads/1/3/1/3/131398406/6249461.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/historia_de_los_anabaptistas.pdf
    • https://cdn.shopify.com/s/files/1/0433/4986/8712/files/sotumitusijuxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/guwufitatimaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/7696/0924/files/jemipizi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4238/1725/files/30747452597.pdf
    • https://cdn.shopify.com/s/files/1/0434/4076/7132/files/teparif.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/52453374760.pdf
    • https://cdn.shopify.com/s/files/1/0434/7520/6294/files/buxomolarabajipatuledemo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/24665729754.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074d1.bin
7a1d79f43f7d09dd9fb1ee942f506e914e959f4d59623f99245eab09bed492e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D1 5576 bytes
font_01_sfnt_off0000879c.bin
9d1092d72464076b69375309caf1987b41f1ad15b682fc0ff9b0e0b1cca3f27d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x879C 14912 bytes

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