Malicious PDF — malware analysis report

Static analysis result for SHA-256 223e14b765db2067…

MALICIOUS

PDF

32.4 KB Created: 2020-08-01 14:58:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4beda7d46a60eb61405e4a4a73b06be0 SHA-1: c939d8311f89de8cc5a92bd21313b623486d57bf SHA-256: 223e14b765db2067f8315c7db0b071a1089f87fb164cdc6f3aaad18271ae4dc0
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 a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=bonaire+swamp+coolers, suggesting the primary intent is to redirect the user to malicious infrastructure.

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=bonaire+swamp+coolers
    • http://files.yogaskies.net/uploads/1/3/2/7/132740182/nizidukoroloju.pdf
    • http://files.postersagainstcruelty.com/uploads/1/3/0/9/130969446/zosipela-jogeperak.pdf
    • http://files.lezcycles.com/uploads/1/3/1/3/131379554/sibeti-jomopoxowaj-fojogiku.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/majomoginuvomiposelipaku.pdf
    • https://cdn.shopify.com/s/files/1/0431/1462/7223/files/14604788270.pdf
    • https://cdn.shopify.com/s/files/1/0431/4418/3974/files/4888213021.pdf
    • https://cdn.shopify.com/s/files/1/0433/6356/5718/files/guxujefosaguduvi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7213/5074/files/57405428646.pdf
    • https://cdn.shopify.com/s/files/1/0438/3975/0294/files/87375972549.pdf
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/xifujezegufupul.pdf
    • https://cdn.shopify.com/s/files/1/0434/8893/6102/files/kunotizekifusufubikonosi.pdf
    • https://cdn.shopify.com/s/files/1/0441/1876/9816/files/82880767865.pdf
    • https://cdn.shopify.com/s/files/1/0437/7113/4106/files/13968415373.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/84666821869.pdf
    • https://cdn.shopify.com/s/files/1/0428/6011/8175/files/16844930151.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_off00004472.bin
9077a39200be91888509681d7260318e5fbd1b9d7764b15919b1fb38295585b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4472 5220 bytes
font_01_sfnt_off0000562b.bin
9f4f0f600a9615fb5176fb6ff6e8bcdfface0cf5de346a69a5a27c5be92371be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x562B 9084 bytes

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