Malicious PDF — malware analysis report

Static analysis result for SHA-256 f216d5158277d061…

MALICIOUS

PDF

42.1 KB Created: 2020-07-29 12:39:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50fbb4eb06030eba3a4d9bf8fe28b5a3 SHA-1: 7810e31c51d058b98b840895e48c8f00f4d26b56 SHA-256: f216d5158277d061639eec15692dd363f577619254e5e474fe9d6259a8881164
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This indicates an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to 'conditional exercises pdf' and authoring application details, suggesting a lure. The presence of numerous embedded URLs, many pointing to Shopify, further supports the link farm heuristic, indicating a broad distribution 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.com/pify?keyword=1st+2nd+3rd+conditional+exercises+pdf
    • http://files.relationshipsllc.org/uploads/1/3/1/3/131398184/4171462.pdf
    • http://files.nvintl.com/uploads/1/3/2/6/132681033/nenovulajo.pdf
    • http://files.jjsatthecopperpot.shop/uploads/1/3/1/6/131637055/7f75722d0536f.pdf
    • https://cdn.shopify.com/s/files/1/0440/1420/7134/files/29542631366.pdf
    • https://cdn.shopify.com/s/files/1/0428/5949/5590/files/7300942938.pdf
    • https://cdn.shopify.com/s/files/1/0432/3141/2379/files/40011676033.pdf
    • https://cdn.shopify.com/s/files/1/0428/1214/5830/files/67239022055.pdf
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/leralanuwikef.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/83835001780.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/kufon.pdf
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/26255010421.pdf
    • https://cdn.shopify.com/s/files/1/0429/0704/1958/files/redozoviz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9141/8518/files/74314855043.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/
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000654e.bin
1c275fb4b4f14d393a6ae68e08c3dcacfa7930ed1a5543f06bf007961826885e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654E 5256 bytes
font_01_sfnt_off0000772c.bin
bd5dcba2fe3b8849e0be68a83d7c6293b230b9a063642a7f775427a320e4a85d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x772C 10636 bytes

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