Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b54709222dfd74c…

MALICIOUS

PDF

45.2 KB Created: 2020-08-16 00:41:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d694ce0afc5caf73110f5b8d2b8dd0f SHA-1: bb371feae239c59566e83ccf514e527d5554f8fb SHA-256: 3b54709222dfd74c827a1bfafbf4100b3bbfd7be765a8a713c6abbe9c62eba92
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=legal+size+laminating+sheets+walmart'. This URL is likely used to redirect users to malicious content. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file also contains a large number of embedded links, many pointing to Shopify, which is characteristic of SEO link farm techniques used to obscure malicious redirects.

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=legal+size+laminating+sheets+walmart
    • http://files.shellyliedtke.com/uploads/1/3/0/9/130969424/5734531.pdf
    • http://geparaw.carinagossele.com/uploads/1/3/2/3/132302870/7303114.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/viborovikumowenaben.pdf
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/86014578763.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/libro_para_aprender_ingles_facil.pdf
    • https://cdn.shopify.com/s/files/1/0448/3753/5906/files/vibabe.pdf
    • https://cdn.shopify.com/s/files/1/0439/1154/4987/files/beden_dili_kitab.pdf
    • https://cdn.shopify.com/s/files/1/0430/9604/7783/files/giwonutunimarib.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/89529353618.pdf
    • https://cdn.shopify.com/s/files/1/0431/1272/6677/files/81443521115.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/43603034081.pdf
    • https://cdn.shopify.com/s/files/1/0450/0927/2990/files/ocean_ofs_books.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdf
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/xiduwegodimukedolelan.pdf
    • https://cdn.shopify.com/s/files/1/0437/0006/0310/files/57977014811.pdf
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/17675362834.pdf
    • https://cdn.shopify.com/s/files/1/0433/6409/0006/files/64508151075.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_off00007242.bin
f120df66af58537141e1a1162bfdecb6e080e0c228acbecdae6f7e74f5f08d6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7242 5180 bytes
font_01_sfnt_off000083cc.bin
c8fc2a280424c6baa2a17a2fab3d70f8ab65bbbe66e5c3b319db704648233762		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83CC 10744 bytes

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