Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef40607904678ba…

MALICIOUS

PDF

98.3 KB Created: 2020-09-05 21:29:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85a7592284b516a344a6ee894b01224a SHA-1: 7a6e0e18ccfd6a289f7ef616615adf914c8da260 SHA-256: bef40607904678ba3948bf60177f3d62f2ec5d7b36bfc81da3cc2ee38f19bdab
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=amplificateur+inverseur+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, including one hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains references to the redirector URL, suggesting an attempt to lure the user to a malicious site.

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=amplificateur+inverseur+pdf
    • https://cdn.shopify.com/s/files/1/0435/4765/6343/files/2162865861.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9263/files/kamefexiwigifobes.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/96946935719.pdf
    • https://static.usrfiles.com/ugd/bcfc12_ca625f0d6faf4b9e81dd8593ba5fbe89.pdf
    • https://static.usrfiles.com/ugd/40336e_f58fbd3c14b14b5fb90aaf0e110c00bd.pdf
    • https://static.usrfiles.com/ugd/c068f8_c780d1101b13427da814dc478b6635dd.pdf
    • https://static.usrfiles.com/ugd/6a22cb_11ffbaddd0a2460eaf051cf9048b36dc.pdf
    • https://cdn.shopify.com/s/files/1/0434/9915/9718/files/aditya_hrudayam_stotram_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/tabla_de_aceros_arequipa.pdf
    • https://cdn.shopify.com/s/files/1/0461/5274/5123/files/56939534077.pdf
    • https://cdn.shopify.com/s/files/1/0428/9147/7159/files/21909939397.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_off000145df.bin
a577df2c9a506b7714884d6d5c440e0dcddd8012a5fd1f8465ba89fcba833965		 pdf-font-stream PDF embedded font (sfnt) at offset 0x145DF 5352 bytes
font_01_sfnt_off00015806.bin
69102d67e77bf1e1b89764956a8312bf624c3f15961312429e851622bfe214ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15806 10744 bytes

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