Malicious PDF — malware analysis report

Static analysis result for SHA-256 516049e0ad4db2b4…

MALICIOUS

PDF

35.0 KB Created: 2020-08-15 03:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65050dd8d66e5c180f7d5c3bc5f4588a SHA-1: 58ff4b65040d058710edbdb47bd0936ac938cf08 SHA-256: 516049e0ad4db2b41f67cbd40f8df7b01273b9cfe959c6aed0ef4bdcf507c8c7
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=kesariya+balam+audio+song'. It also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on shopify.com. The document body, though heavily obfuscated, contains references to the malicious URL and benign-looking PDF filenames, suggesting a lure to a malicious site disguised as a document or media download. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=kesariya+balam+audio+song
    • http://nutabubox.eco2magnesia.ca/uploads/1/3/2/6/132695742/xefekituwabaf_fisibaxog_lomiwepidibom.pdf
    • http://files.olddutchflavor.com/uploads/1/3/0/7/130739043/9597941.pdf
    • http://files.wesleytbrown.com/uploads/1/3/1/8/131856065/32d4b0.pdf
    • https://cdn.shopify.com/s/files/1/0440/2456/1829/files/99233949087.pdf
    • https://cdn.shopify.com/s/files/1/0434/4299/5352/files/libokosebudol.pdf
    • https://cdn.shopify.com/s/files/1/0438/2670/8637/files/ccna_routing_and_switching_short_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/7160/2855/files/pimewuludeb.pdf
    • https://cdn.shopify.com/s/files/1/0435/9687/3885/files/26118561595.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6817/files/96290808657.pdf
    • https://cdn.shopify.com/s/files/1/0438/3070/6333/files/86880083512.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/64232257765.pdf
    • https://cdn.shopify.com/s/files/1/0432/8328/4136/files/dokog.pdf
    • https://cdn.shopify.com/s/files/1/0432/6345/9486/files/18223915213.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/37429242222.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/lapokeduwofirumokaxuwa.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_off00004836.bin
6a67e68113a1f9dca30a490bd0ac2abeb4fd276691ea68aa97a2067a6d4bf18b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4836 5356 bytes
font_01_sfnt_off00005a56.bin
3cd5b73f6994c15f7e5af4b83aaaa5b61eed6b59d24d41e8b798a6a4ca88b041		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A56 10376 bytes

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