Malicious PDF — malware analysis report

Static analysis result for SHA-256 3698ddea77aa96c0…

MALICIOUS

PDF

52.1 KB Created: 2020-07-30 17:42:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8603580399242af74c6d2a82e67d2d31 SHA-1: 9334dfb4afa19683fc8123b9e35ca93af4b0d744 SHA-256: 3698ddea77aa96c0b7c49126285effc5483e89b5a816966fbb195cce35036da5
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, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, appears to be a lure related to medical analysis, further supporting the malicious intent of directing users to harmful sites.

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=les+analyses+m%25C3%25A9dicales+biochimie+pdf
    • http://files.besimplytimeless.com/uploads/1/3/1/4/131438038/8794107.pdf
    • http://files.tradewinrealestate.net/uploads/1/3/0/7/130776602/3178a965e15aa3.pdf
    • http://files.kristynlanggundlach.com/uploads/1/3/1/0/131070702/laloloxepifo.pdf
    • http://files.hhnailstrips.com/uploads/1/3/1/6/131606262/9613797.pdf
    • http://files.writingmyownfate.blog/uploads/1/3/0/8/130813869/6297047.pdf
    • https://cdn.shopify.com/s/files/1/0437/7811/3697/files/18147270688.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/tamutenarupapirotur.pdf
    • https://cdn.shopify.com/s/files/1/0439/0679/3627/files/52797060671.pdf
    • https://cdn.shopify.com/s/files/1/0433/0363/3051/files/keneze.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/zunagi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1729/8342/files/gazaxojumuvexodota.pdf
    • https://cdn.shopify.com/s/files/1/0434/8228/4194/files/62857213250.pdf
    • https://cdn.shopify.com/s/files/1/0437/3279/5541/files/45614608694.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/53917261770.pdf
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/radoditopexukofale.pdf
    • https://cdn.shopify.com/s/files/1/0429/3482/9222/files/xososofekefe.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_off00008c96.bin
237d93f5db5d363f4e413976c36deb4532cb4bea5f4ecae76df3d1428eebaf2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C96 5332 bytes
font_01_sfnt_off00009e40.bin
04b43d5c9b19005e52a64e992a404cc90fa8a97eefb5d67518a0f84ca66de3e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E40 11148 bytes

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