Malicious PDF — malware analysis report

Static analysis result for SHA-256 d27f3d3087d25bcf…

MALICIOUS

PDF

83.4 KB Created: 2020-08-08 06:04:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46262f19b8a48771651c3ff246a6e254 SHA-1: ea0b1ecfbd5585791bbae829be989f2367bd2aa5 SHA-256: d27f3d3087d25bcf16c2f1049ae2413a6b7874f9bcd8a2fa7b63ef1b696d16f0
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=tata+starbucks+case+study+pdf'. This indicates an attempt to lure the user to a potentially harmful site. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The file is a PDF generated by wkhtmltopdf, which can be used to create malicious documents.

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=tata+starbucks+case+study+pdf
    • http://files.paintingwithjustin.com/uploads/1/3/0/7/130740458/bivupufulaxuduk.pdf
    • http://files.mallimopianostudio.com/uploads/1/3/0/8/130813732/nimegujipojav.pdf
    • http://files.cottagesineurekacom.com/uploads/1/3/1/3/131383247/dobuweruwosiriku.pdf
    • http://files.kljdreamfactory.com/uploads/1/3/1/0/131070161/daputusisujalox.pdf
    • http://files.kymbreanne.com/uploads/1/3/1/0/131071035/4155157.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6721/files/14979721982.pdf
    • https://cdn.shopify.com/s/files/1/0428/1116/2790/files/iphone_model_number.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/thandi_alangaram_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/c_to_lowercase.pdf
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/gibefogegimeturito.pdf
    • https://cdn.shopify.com/s/files/1/0432/9163/9974/files/begopifugoz.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/dulesejufutoxaki.pdf
    • https://cdn.shopify.com/s/files/1/0438/2579/1133/files/penatalaksanaan_asma_pada_anak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39858795743.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/30112985345.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_off00010298.bin
8dbca53e5d23e7844b2fb519fbcdfcedcdec87e75c25cd4c23f0bc3267fdf2e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10298 5372 bytes
font_01_sfnt_off000114ef.bin
7752f5048ff35acb7abdf5bf074f97b43047f80cf2ffd4766b5ec22309e13eb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114EF 13688 bytes

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