Malicious PDF — malware analysis report

Static analysis result for SHA-256 f84bfd36bdcd40e7…

MALICIOUS

PDF

43.1 KB Created: 2020-08-29 15:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a72aa96f79f92c3bd845547d1952783 SHA-1: 26c6365be4b3af1ddb1a3397f4092e1601146b0f SHA-256: f84bfd36bdcd40e700ef2fc18578efcad0a164eaa907e2e4a3c914b132994bde
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to ttraff.com, which is flagged as a malicious redirector. The document body and heuristics indicate a lure for downloading software, likely leading to malicious content via the redirector. No scripts were extracted from this sample.

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/wix?keyword=planet+zoo+download++uploaded.to
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/fumizikin.pdf
    • https://cdn.shopify.com/s/files/1/0431/3071/6322/files/72345255040.pdf
    • https://cdn.shopify.com/s/files/1/0437/1084/0981/files/supernatural_ways_of_royalty.pdf
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/49058802289.pdf
    • https://cdn.shopify.com/s/files/1/0453/3600/2715/files/wevarik.pdf
    • https://cdn.shopify.com/s/files/1/0430/5630/0186/files/fejenomuxomikub.pdf
    • https://static.usrfiles.com/ugd/b8c837_94d27aa776bf44f5a4c7e6f533809d00.pdf
    • https://static.usrfiles.com/ugd/fbccce_d578762edcbf4709be5267e6d2a7dbc6.pdf
    • https://static.usrfiles.com/ugd/c7a620_a115f73bd1084f39981b04fb9ba18e89.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e9895dc3dcf435687dd0be275f704c8.pdf
    • https://cdn.shopify.com/s/files/1/0436/8770/6777/files/17372514709.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/5403301075.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/zukulimevubiv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006252.bin
a7db376f2ae68cfa410e959e32b4ed57b23f99a553d04ab5f7eac721f0d18687		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6252 4852 bytes
font_01_sfnt_off000072f8.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F8 1800 bytes
font_02_sfnt_off00007b86.bin
75e4bf2cc5d1336c8c7a5dda59382c5e884e25869cbddb220cd3df001b90e6e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B86 10496 bytes

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