Malicious PDF — malware analysis report

Static analysis result for SHA-256 e80d0766ac29b436…

MALICIOUS

PDF

48.8 KB Created: 2020-07-28 19:14:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5186812ef5b7f38448a7636eeeceb921 SHA-1: 9b73ffa27804101110fccd26278e8dce03ae75bf SHA-256: e80d0766ac29b436845f4cd142f74a9143eacc2c870111db8bb265c1a6d55f38
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits a PDF link farm behavior, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf. The primary attack pattern involves luring users to malicious sites via these links.

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=manualidades+por+navidad+2019
    • http://files.mobileonegaming.com/uploads/1/3/0/7/130738710/24911e10608035.pdf
    • http://files.lindberghforte.org/uploads/1/3/1/0/131070688/xemul.pdf
    • http://files.elementsoflifeinstitute.com/uploads/1/3/1/4/131407890/wigepidifolutenilin.pdf
    • http://files.bluewrenadventures.com/uploads/1/3/0/9/130969915/2f0ae85c83.pdf
    • http://files.bluewrenadventures.com/uploads/1/3/0/9/130969915/2f0ae85c83.p
    • https://cdn.shopify.com/s/files/1/0433/8742/0835/files/2885759774.pdf
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/63639023697.pdf
    • https://cdn.shopify.com/s/files/1/0431/6017/4754/files/52474104274.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/jawumafi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/24482758509.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/58885943605.pdf
    • https://cdn.shopify.com/s/files/1/0431/1869/0458/files/63318440850.pdf
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/56838354873.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77330784460.pdf
    • https://cdn.shopify.com/s/files/1/0432/9419/5870/files/71305331662.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/3239537803.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_off00007f38.bin
94915b746f6fde84cba54854a2d4dbb4b2b2c5dc2fe3a734262a0a4d5342f421		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F38 5300 bytes
font_01_sfnt_off00009142.bin
4ccf590bd4c51d9571c5cd412b033317bece9fc9f9f3100a53c21b913bf3529a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9142 10960 bytes

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