Malicious PDF — malware analysis report

Static analysis result for SHA-256 50ce9636f98c545b…

MALICIOUS

PDF

42.2 KB Created: 2020-08-18 21:19:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50ef1eccb748960aa8c6fd816f2eba5a SHA-1: fb507b4971e7a9abf8e5cdf18b11296e203d90e2 SHA-256: 50ce9636f98c545bade4b98ee3708ba51135c40613c251ff044e9449f8a0c7bf
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL. This URL is likely used to redirect the user to a malicious site, potentially for phishing or malware delivery. The presence of numerous other links, many hosted on Shopify, suggests a link farm or a method to obscure the final malicious destination.

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=linkedin+company+profile+template
    • http://files.314actionucla.com/uploads/1/3/1/3/131380847/2672732.pdf
    • https://cdn.shopify.com/s/files/1/0435/4605/0714/files/christmas_tree_waterer.pdf
    • https://cdn.shopify.com/s/files/1/0435/1026/8068/files/49053885827.pdf
    • https://cdn.shopify.com/s/files/1/0446/7766/0825/files/cataract_classification.pdf
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/13323342524.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/99833037588.pdf
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/chehel_kaaf_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/99742649834.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/32601826391.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/exorcism_of_anneliese_michel.pdf
    • https://cdn.shopify.com/s/files/1/0437/6929/9098/files/how_to_convert_sawhorse_projection_to_fischer_projection.pdf
    • https://cdn.shopify.com/s/files/1/0440/6483/3686/files/99792781576.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/curry_blake_healing.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/buddhist_economic_philosophy.pdf
    • https://cdn.shopify.com/s/files/1/0432/3275/5875/files/78731202118.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/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006820.bin
5fdf3af4bf5ea4a4249623ca7f92f3af0ce5a51799f93d4e652ab4f6f98a8ca8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6820 5232 bytes
font_01_sfnt_off000079d9.bin
1edb3025964dbd823c477520749ef4d32c0c5c2bfd806a0dbbc40e105ba03453		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79D9 9876 bytes

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