Malicious PDF — malware analysis report

Static analysis result for SHA-256 b74325c933e86658…

MALICIOUS

PDF

41.0 KB Created: 2020-08-04 23:29:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9047fefe69d56659d4c111bddb05a947 SHA-1: 362166e28293fd4e7101d375602d399046982748 SHA-256: b74325c933e8665836008b954366bbe6eb32af7c9dd7c8d0582044fceeb3fde5
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One critical heuristic firing indicates a malicious redirector link to 'ttraff.com', which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, also contains this redirector URL, suggesting the primary intent is to trick the user into clicking the link. No scripts were extracted from this sample.

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=numbers+1+to+100+in+english+words+pdf
    • http://files.chungenliu.com/uploads/1/3/0/7/130738499/deraxagirit.pdf
    • http://files.dad-shoes.com/uploads/1/3/0/8/130814393/lomenojizul.pdf
    • http://files.faithacademyashland.com/uploads/1/3/2/7/132712282/18482.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/95375067281.pdf
    • https://cdn.shopify.com/s/files/1/0430/4352/0666/files/97628276179.pdf
    • https://cdn.shopify.com/s/files/1/0431/9733/3668/files/vixikakezunagu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5203/9328/files/36960186064.pdf
    • https://cdn.shopify.com/s/files/1/0437/9751/2354/files/46342717688.pdf
    • https://cdn.shopify.com/s/files/1/0432/6532/7262/files/61646337058.pdf
    • https://cdn.shopify.com/s/files/1/0434/2883/9586/files/likopefaza.pdf
    • https://cdn.shopify.com/s/files/1/0432/0349/4043/files/lozosoraninafobu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0269/9681/files/dolamurarivewuxawujuvepu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/xezilerojeruwixebu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/nevogujaba.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_off00005a26.bin
4300e6981eab46b523ad76f54046212a8b95ee4f5cbdc3fd0bf1099a276d381a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A26 5640 bytes
font_01_sfnt_off00006d42.bin
cb868b347bf7c0bcd0a91c34a6894959e55a9b30e39743a801c55e34dca81ccf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D42 12904 bytes

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