Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3bc135f5c594fa3…

MALICIOUS

PDF

52.4 KB Created: 2020-08-05 05:38:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43dc07a83823efcb7bb749a11936e0ff SHA-1: 39832158f4f10a444d7d2ec44141b50b523e5281 SHA-256: d3bc135f5c594fa3dc5c654d5dd49d3bcc517322069a336babe932d07bfd5960
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating it's a malicious redirector. The primary link, https://ttraff.com/pify?keyword=faa+far+91+pdf, is a known redirector service. The document body itself is heavily obfuscated but contains this URL and other links, suggesting a lure to external malicious content. The presence of numerous links, many pointing to Shopify domains but ultimately leading through the redirector, indicates an attempt to obscure the true malicious destination, likely for phishing or malware distribution.

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.com/pify?keyword=faa+far+91+pdf
    • http://files.bhmblog.com/uploads/1/3/0/7/130775934/jerizuvus.pdf
    • http://xetafe.2020pray4galway.com/uploads/1/3/1/6/131606407/wuluxiditumikirosori.pdf
    • http://files.dee-lightful.org/uploads/1/3/1/6/131637163/fiwewurepobese_viratabok_rubodamabuzukiz_gezeraxezawu.pdf
    • http://files.empirefloorsca.com/uploads/1/3/0/7/130776220/jiniz-devemugo-geboxu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1959/0040/files/risk_board_game_rules_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/9971/6770/files/57134734471.pdf
    • https://cdn.shopify.com/s/files/1/0434/2707/0104/files/16288106782.pdf
    • https://cdn.shopify.com/s/files/1/0439/4031/5294/files/90789457016.pdf
    • https://cdn.shopify.com/s/files/1/0428/4727/3116/files/pewul.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/gexekalikuzovuwifusivam.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/deliwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/40505815247.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/zodobotale.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/85402612580.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_off0000930a.bin
4a5ec6953949008354094559a0604321813e19a2481a6ce10a741182e9aff38f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x930A 4988 bytes
font_01_sfnt_off0000a41c.bin
847ebe9ff4f11df5fe35e78eed23d334f9be02dee059a2797fa1d26ca66a3192		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA41C 9684 bytes

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