Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6445789a72faaac…

MALICIOUS

PDF

36.4 KB Created: 2020-08-05 15:45:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6ffd8c94d353639f309bd66a2297dc4 SHA-1: 81f8056fbd9186c77c54903e3e7552e2b3f43e72 SHA-256: b6445789a72faaaccc9075f50fbc0a2169ace81892b3291868700009cf95766f
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many hosted on Shopify, designed to appear as legitimate documents. One specific link, however, points to a known malicious redirector. The presence of a 'download button' heuristic further supports the lure mechanism. The primary malicious URL is ttraff.cc, which likely serves as a gateway to further malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=after+2+pdf+espa%25C3%25B1ol+google+drive
    • http://files.artisanteahut.com/uploads/1/3/0/8/130814118/panowupamo-bogale-fitibesato.pdf
    • http://files.getoutthereadventure.org/uploads/1/3/0/9/130969148/8767330.pdf
    • http://files.ctsonline.org/uploads/1/3/1/0/131070230/dc8ab55.pdf
    • https://cdn.shopify.com/s/files/1/0428/8223/6583/files/99427759430.pdf
    • https://cdn.shopify.com/s/files/1/0432/6440/9764/files/2171983044.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/59190123702.pdf
    • https://cdn.shopify.com/s/files/1/0434/5505/3989/files/51892451705.pdf
    • https://cdn.shopify.com/s/files/1/0431/2399/8874/files/nagopemede.pdf
    • https://cdn.shopify.com/s/files/1/0436/5195/6894/files/15580870594.pdf
    • https://cdn.shopify.com/s/files/1/0439/4788/4699/files/bakadebowulegekuxefabe.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2903/files/wirevilejekepigafabozo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4277/3914/files/36064542519.pdf
    • https://cdn.shopify.com/s/files/1/0434/3817/8470/files/37938897809.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_off00004d8b.bin
649af0f5d61780afc66da5bd552dc40a14778a78baa63b9d8654e3bf29fdcca4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D8B 5600 bytes
font_01_sfnt_off00006074.bin
ce72d0039e97fe4ec743a659c654d17c2ae4a1b1a075c0336c5edf456cb05bd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6074 10268 bytes

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