Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee83e9d276c14cc…

MALICIOUS

PDF

51.1 KB Created: 2020-08-15 06:23:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 479258cd0ba1d1a3adcb6bca65ee3c30 SHA-1: 4e4177182feb78a012c74d3117ff4450ff62e03f SHA-256: 9ee83e9d276c14cc6c8a6a2a400c5d708c69f4ff17cf655d15c7358602b395c4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One of the primary links, 'https://ttraff.ru/pify?keyword=2019+action+movies+free', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the ttraff.ru domain.

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=2019+action+movies+free
    • http://files.barefootfreedomyoga.com/uploads/1/3/1/6/131637219/wademasadudutip.pdf
    • https://cdn.shopify.com/s/files/1/0433/1392/2206/files/litusodupojixojivedesizu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7355/2040/files/rumubotojez.pdf
    • https://cdn.shopify.com/s/files/1/0428/3806/5308/files/27004358870.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81579197248.pdf
    • https://cdn.shopify.com/s/files/1/0448/4556/4065/files/candlestick_chart_patterns_explained.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdf
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/android_21_vs_goku_manga.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tijubijevuvikupox.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_off0000887b.bin
183218d52c2659c185a3e73fdd8e76c7ad3e423d55427983b56ac690a51892f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x887B 5444 bytes
font_01_sfnt_off00009ae6.bin
d7d160eae1ebf2c7b2c31ff0e7d97ff68113cc1774f0c6cbc9fb87598603b1c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AE6 10836 bytes

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