Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdafd4a602f9057a…

MALICIOUS

PDF

41.5 KB Created: 2020-08-14 22:37:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0639c4d109d4b123a20545681df2e6e9 SHA-1: a91942723f0fdbd11d89634187dcfbcbe8a7b6ed SHA-256: cdafd4a602f9057a4e420bd6770e3f1925a674f55229a0548291838b161518a0
150 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, identified as a PDF link farm. One of these links, https://ttraff.com/pify?keyword=epilepsy+and+behavior+case+reports, points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains this URL and other Shopify-hosted PDF links, suggesting a coordinated effort to distribute malicious content or phish users. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=epilepsy+and+behavior+case+reports
    • http://files.womenartistsreaction.com/uploads/1/3/2/3/132302863/8d22be5d98d153.pdf
    • https://cdn.shopify.com/s/files/1/0432/2682/4859/files/examveda_aptitude_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/4570/0262/files/mega_direct_link_generator.pdf
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/11432602548.pdf
    • https://cdn.shopify.com/s/files/1/0433/2758/6457/files/12195482416.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/87069942777.pdf
    • https://cdn.shopify.com/s/files/1/0432/6794/8706/files/matrix_multiplication_java.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/wamulixasufasuboxoxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4646/0830/files/makalah_akuntansi_pemerintahan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/29349941596.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/risubakasofoxugi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/google_docs_to_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/banesujose.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/95394951404.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_off000065a8.bin
4380ce18541a3c575ad7c3bb87cf0f98c35c687f3000f85f6f8e7e3fefde93e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A8 5420 bytes
font_01_sfnt_off00007805.bin
8e1d3a369515681b9bdbfa7d7201e6eedd6bc8b92211b50a80fffbd88f43fa13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7805 9712 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.