Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e001215ad64fc71…

MALICIOUS

PDF

57.4 KB Created: 2020-07-29 11:36:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5910ed1dac52c5bac156787955dfa0b8 SHA-1: c2e4cfa7ce62fba6a4830b12a24b4acd2574c627 SHA-256: 4e001215ad64fc719da83c9db7cd4352df195450138b7635b1a042e1befc6a99
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm attack designed to funnel users to malicious infrastructure. The document body, though heavily garbled, appears to be related to academic exercises, likely a lure.

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=exercices+corrig%25C3%25A9s+de+chimie+atomistique+pdf
    • http://files.insulatedbulkheadsandcurtains.com/uploads/1/3/1/6/131636642/5454362.pdf
    • http://files.abstractdenise.com/uploads/1/3/0/9/130969999/fbc1822ff189f.pdf
    • http://files.restorationchurchgb.org/uploads/1/3/0/7/130739470/4619879.pdf
    • http://files.activefittraining.com/uploads/1/3/1/4/131437378/jolivo_welekemabozir_jiderejomum.pdf
    • http://files.ashleysandersonphotography.com/uploads/1/3/0/7/130740158/7888149.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/jajuputawenewutepotugu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7424/7069/files/65877874524.pdf
    • https://cdn.shopify.com/s/files/1/0435/1570/7551/files/dotasadupabinamoligixozuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/vagusunufidu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/92984947795.pdf
    • https://cdn.shopify.com/s/files/1/0432/7807/4020/files/23379834807.pdf
    • https://cdn.shopify.com/s/files/1/0440/6929/0149/files/87862391538.pdf
    • https://cdn.shopify.com/s/files/1/0430/3981/7890/files/nesawetopesaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/4531/3941/files/33908498364.pdf
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/99705778580.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/
    • https://cdn.shopify.com/s/files/1/0435/1570/7551/files/do

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009c34.bin
63ad4cdd6505ebc31721938faef8ad39aa52e10ec8c553a44b40f466de483d63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C34 5604 bytes
font_01_sfnt_off0000aeff.bin
3a46e9caa2f5996b45a5940ca1d859c3fc4841de875e9db8eda111ca48513728		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEFF 12336 bytes

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