PDF malware analysis — malicious · 1ba00eb63cee7efd

MALICIOUS

PDF

39.8 KB Created: 2020-09-18 21:47:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 01fd3e40237ff9ee9532985225698e02 SHA-1: bfcd607a9f472f7cbe622c252422eb70eecb511d SHA-256: 1ba00eb63cee7efda5dfd163aa08ae54dbd5246d81ba2f421e4b5579107b09ca

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=nintendo%20ds%20action%20replay%20won'. This indicates the document's primary purpose is to redirect users to a potentially harmful destination. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links, suggesting a broad distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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.cc/wb?keyword=nintendo%20ds%20action%20replay%20won
- https://5527f429-5b42-4ddf-88e6-ba62bb3e6b35.filesusr.com/ugd/33a2e4_b47eb86f8b214dc29637e9754ae7b18e.pdf?index=true
- https://af341219-6ed4-41b0-b483-2d32ff2ba4c4.filesusr.com/ugd/21a131_33933071208c461bae431ee609b74917.pdf?index=true
- https://9c8ea073-daf5-4955-adc9-1721fd594da9.filesusr.com/ugd/d63aaf_a0b6db356f4c44949625886b51330bef.pdf?index=true
- https://5089bdbb-27d3-4e37-9e12-85e350aec392.filesusr.com/ugd/cf9ff1_2306eaf6c7424d0d86e6958e68d2adb2.pdf?index=true
- https://841dcaff-5d9f-4f84-94a1-da8f70050b1c.filesusr.com/ugd/9c66ff_6faecb7cc7b74f3f9207ba1871e8f856.pdf?index=true
- https://955021ef-af36-4d8d-805b-993a29db9ac1.filesusr.com/ugd/f65518_709f0b30745a42b28fff55d8aba863af.pdf?index=true
- https://09b9ccd7-39f5-4eaa-8c3c-2d161ecd0753.filesusr.com/ugd/0c60a0_f99d7c45c0e24a06ba99650a5c64833a.pdf?index=true
- https://052422cf-129b-4cd7-8cd3-12fc3ceb679e.filesusr.com/ugd/3bcfef_32812095ac56408397f8524092563803.pdf?index=true
- https://a6c1b372-a7e7-48af-bdf8-c6830b879c2a.filesusr.com/ugd/48bf55_510a56eb3def4eb18057b1b686566a8b.pdf?index=true
- https://cdn.shopify.com/s/files/1/0445/9390/5828/files/fernando_sor_studies_tab.pdf
- https://cdn.shopify.com/s/files/1/0432/5389/1232/files/73487632208.pdf
- https://cdn.shopify.com/s/files/1/0438/1815/6192/files/gakezekilibesel.pdf
- https://cdn.shopify.com/s/files/1/0435/7190/4673/files/tudado.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000057cf.bin` `834e834f07ca5ff9aba59c810abad46c142892bbbf5b8901057d5ac839df3ba6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x57CF	5264 bytes
`font_01_sfnt_off000069e9.bin` `048fadd4f602e0468eb45262f9c1b31b4dd2096f9a32e6156010fa8b15f8fb54`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x69E9	12752 bytes

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