Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec19776510bb6f2…

MALICIOUS

PDF

35.7 KB Created: 2020-08-28 00:03:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41172df041d4d1c04dae77882ae7652f SHA-1: 0e309de0fbf9228b5fb8aba54c8f64cc95ea05ac SHA-256: 7ec19776510bb6f2cd478d8af7b56f5d14ace0347a805308c7c0ef8f65832ae9
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, a technique often used for SEO poisoning or to direct users to malicious sites. One of the primary links redirects through 'ttraff.cc', known malicious redirector infrastructure. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs. No scripts were extracted from this sample.

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=wild+and+goosey+foundation+papers
    • http://zorago.artswithaheart.org/uploads/1/3/2/7/132710712/nibelukixatadu.pdf
    • http://files.kinglenatcornerstone.com/uploads/1/3/1/4/131437194/2781582.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/90595267069.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8057/files/calque_word_formation_process.pdf
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/koxobexozagos.pdf
    • https://cdn.shopify.com/s/files/1/0434/0740/9308/files/26781386998.pdf
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/adobe_acrobat_x_pro_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/5911/6182/files/punupedodiduvutigefo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/nesusariselofitizeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/tofukimonabuvamujeki.pdf
    • https://cdn.shopify.com/s/files/1/0435/4090/6143/files/how_to_dual_wield_in_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0960/files/zadulidokelozenofalusaso.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_off00004e6e.bin
6e020e45058411d19b53810365a19f242b5246496540278cf217aea3182e2645		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E6E 5324 bytes
font_01_sfnt_off000060aa.bin
b61b827e3d067afe4a1e6a3ac8c15510ade03ba7105544fb9a6f8c5879e40deb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60AA 9864 bytes

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