Malicious PDF — malware analysis report

Static analysis result for SHA-256 e01d6bfd532988ef…

MALICIOUS

PDF

38.1 KB Created: 2020-08-14 21:32:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61715f2a56065d90e642490a9adbaba4 SHA-1: c993e4233fee1379b62681cd6f436e617dbaf090 SHA-256: e01d6bfd532988ef5d27f690ac3446f1d497259d1aee2091bc734b08528372e0
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector at https://ttraff.com/wb?keyword=igcse%20year%203%20science%20worksheets. This suggests the document is designed to funnel users to malicious infrastructure under the guise of providing educational resources. No scripts were extracted from this sample.

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/wb?keyword=igcse%20year%203%20science%20worksheets
    • http://files.whiteherondesign.com/uploads/1/3/1/0/131070753/1113808.pdf
    • http://files.drrobdds.com/uploads/1/3/1/3/131398406/divopanelinag.pdf
    • http://luxeta.geneseevalleywindensemble.org/uploads/1/3/0/7/130738714/8046813.pdf
    • http://files.baan-amorn.com/uploads/1/3/0/8/130873930/1c6ce8fb5e505.pdf
    • http://zafiniz.capturedmemoriesbyc.com/uploads/1/3/1/4/131453267/d6e5dbe.pdf
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/12018410094.pdf
    • https://cdn.shopify.com/s/files/1/0431/9641/6160/files/7106389725.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/pinulagogefuzodobefiponel.pdf
    • https://cdn.shopify.com/s/files/1/0440/4684/4054/files/mabevuwogowale.pdf
    • https://cdn.shopify.com/s/files/1/0432/8685/5840/files/17145433590.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/livros_administrao_publica.pdf
    • https://cdn.shopify.com/s/files/1/0429/5137/7049/files/12659726121.pdf
    • https://cdn.shopify.com/s/files/1/0437/7041/3207/files/a._l._p._h._a_tome_1.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_off000056d0.bin
164bba653d53b549179cfd67676ffac6ff0b20500bf9b8e827bdfb0b8a1d0d60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56D0 5388 bytes
font_01_sfnt_off00006935.bin
df7619c5e448e56d0bab00b3a8f3a41a2b357af36275030ef3a2339654f78dcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6935 10376 bytes

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