Malicious PDF — malware analysis report

Static analysis result for SHA-256 a33e9b0e6d9b4536…

MALICIOUS

PDF

42.2 KB Created: 2020-08-16 17:22:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 136dff6c2ceb5ea2909014c313044fd7 SHA-1: ee9c0f603425fa10b75c04d60155830a9de73fe6 SHA-256: a33e9b0e6d9b45365f9f3627f4b0fb73751ca4fdd5321dcbb14fe1bd324affc7
160 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.ru/pify?keyword=turn+off+notification+android+code'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains text suggesting a lure to 'Turn off notification android code' and includes the malicious redirector URL and several Shopify URLs. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's intent is to trick the user into installing something, likely to facilitate further malicious activity.

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=turn+off+notification+android+code
    • http://files.lifeislikevegetables.com/uploads/1/3/1/3/131384281/lidiki-pumumaborulenuk.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/29707787208.pdf
    • https://cdn.shopify.com/s/files/1/0433/1572/4456/files/zabisojanejivotuwale.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/sleep_hygiene_worksheet_in_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0431/3432/0794/files/angular_cli_commands_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/bimosum.pdf
    • https://cdn.shopify.com/s/files/1/0431/2124/6359/files/16828113167.pdf
    • https://cdn.shopify.com/s/files/1/0440/8344/5925/files/statistical_formulas_in_excel_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/9940/5977/files/13757423021.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/uphall_primary_school_west_lothian_inspection_report.pdf
    • https://cdn.shopify.com/s/files/1/0439/9408/7582/files/68326638853.pdf
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/lorawomemipawoxazol.pdf
    • https://cdn.shopify.com/s/files/1/0431/4451/1645/files/lumiwi.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_off00006973.bin
0af90d0fd79b9704c3eacdfff0b760a4c221a5ffb1487d4c3b1018461843b4dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6973 4752 bytes
font_01_sfnt_off000079a7.bin
172e0ef15ec08cee690ed045c53793c2930e50babac440fc09f0e1ee8ec54497
pdf-font-stream PDF embedded font (sfnt) at offset 0x79A7 10016 bytes