Malicious PDF — malware analysis report

Static analysis result for SHA-256 fff2b75f1c2a52e6…

MALICIOUS

PDF

87.0 KB Created: 2020-07-29 11:56:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7210f25487c52bec819e0c9b51bfebaa SHA-1: 2eff9e2e76638a9670756e952c77cd1de462ea76 SHA-256: fff2b75f1c2a52e6cbdd2901ea7d3d67a7e289a6e9f75d39b800b623f6aa1218
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru'. The document body appears to be malformed or truncated, preventing a clear understanding of its purported content, but the heuristic firings strongly indicate a malicious redirection attempt.

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.ru/pify?keyword=nato+phonetic+alphabet+morse+code+pdf
    • http://files.tombarthaexcavating.com/uploads/1/3/1/4/131408432/napupebefadibakefupa.pdf
    • http://files.cybermongol.ca/uploads/1/3/0/9/130969148/607457.pdf
    • http://files.sampacloinc.com/uploads/1/3/2/6/132695361/a1351d16846b1b5.pdf
    • http://files.rkspeech.com/uploads/1/3/1/4/131438249/9075954.pdf
    • https://cdn.shopify.com/s/files/1/0433/6399/1717/files/24661722842.pdf
    • https://cdn.shopify.com/s/files/1/0433/0360/0283/files/70382555154.pdf
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/19662414331.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/73586421389.pdf
    • https://cdn.shopify.com/s/files/1/0440/3986/4485/files/wifana.pdf
    • https://cdn.shopify.com/s/files/1/0430/6406/6209/files/nerelir.pdf
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/vekekugitoxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/xumodezewowotanidu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/3630788364.pdf
    • https://cdn.shopify.com/s/files/1/0431/1610/1781/files/63070334400.pdf
    • https://cdn.shopify.com/s/files/1/0433/7932/7141/files/pemekiropemojowisiresu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1651/files/mivitanuvegowos.pdf
    • https://cdn.shopify.com/s/files/1/0434/6209/9097/files/dotoropatemaram.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_off000101c3.bin
f79ae24bcfc4acc82e99056b615c9334bd1546a8ca51cebc83486c2590667c19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101C3 5292 bytes
font_01_sfnt_off00011381.bin
f36f58df3b8819f5fce3761060af88324b6297f6e2d97c6f6b61df864690bef0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11381 20436 bytes

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