Malicious PDF — malware analysis report

Static analysis result for SHA-256 faedbaf6286bea4a…

MALICIOUS

PDF

40.9 KB Created: 2020-08-14 02:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d09b3153e6fbd2ef7b427575af9b8cc2 SHA-1: 53ceb9711733f0c1b987246b918f7d85f1b06ced SHA-256: faedbaf6286bea4a55436e57f8d413582b325894d61cbc71e7488569545b2115
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure. The document body text and heuristics indicate a social engineering lure to install a browser extension, likely to facilitate further malicious activity. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a keyword suggesting a lure for 'chrome addons apk'.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.ru/pify?keyword=chrome+addons+apk
    • http://vemigafa.kirstenboydarts.com/uploads/1/3/1/4/131437423/tevaxem_kubafulaz_gataso_zekafonazit.pdf
    • http://wamitit.oldcutband.com/uploads/1/3/1/1/131164250/04945.pdf
    • http://files.paperchasewholesale.com/uploads/1/3/1/4/131407369/225519.pdf
    • http://files.kashisafaris.com/uploads/1/3/0/7/130738620/fexedinidok_gizepewuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1628/9447/files/98568321809.pdf
    • https://cdn.shopify.com/s/files/1/0435/3694/1215/files/nejinogigusuz.pdf
    • https://cdn.shopify.com/s/files/1/0435/1734/5944/files/najemekawosa.pdf
    • https://cdn.shopify.com/s/files/1/0438/3539/2150/files/cantatrice_chauve.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8664/files/nagogozetefuwezabanutinot.pdf
    • https://cdn.shopify.com/s/files/1/0431/4329/9232/files/43708322395.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76102764406.pdf
    • https://cdn.shopify.com/s/files/1/0430/4768/2201/files/24634459035.pdf
    • https://cdn.shopify.com/s/files/1/0433/7562/4355/files/jefedifajinofixise.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/tusij.pdf
    • https://cdn.shopify.com/s/files/1/0433/6363/1272/files/77729203312.pdf
    • https://cdn.shopify.com/s/files/1/0437/6385/9617/files/download_adobe_reader_untuk_pc.pdf
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/generative_adversarial_networks_with_python_jason_brownlee.pdf
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/bigorunali.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_off000060c1.bin
088275ff45b692d56d38d47894ed1cff9394d6a8a2aad2b24d54fd544e264dea
pdf-font-stream PDF embedded font (sfnt) at offset 0x60C1 5136 bytes
font_01_sfnt_off00007209.bin
444e591828dca405934e020af2cfffbb953821b51646dc2e4cb714f3cf0de04f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7209 10828 bytes