Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ad60770803a52a7…

MALICIOUS

PDF

36.9 KB Created: 2020-08-14 22:10:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4999b2971efe7c924a5fa6a3fae4d217 SHA-1: 3679c4254a5fdf870475a7f6ad4e77e7dac14949 SHA-256: 8ad60770803a52a7f6b8a5d3b0b83a3af2ce3a5562a48b49d33b00d91c918395
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

The PDF contains a link farm and a malicious redirector URL, indicating an attempt to distribute further malicious content. The document body and heuristics suggest a lure to execute commands, likely to download and run a secondary payload from the embedded URLs. The primary malicious URL is ttraff.ru, which redirects to a Shopify-hosted PDF.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=actualisation+formule+excel
    • http://files.strandridge.com/uploads/1/3/0/8/130874652/3d94274c5.pdf
    • https://cdn.shopify.com/s/files/1/0429/7054/6329/files/subnet_mask_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/4800/8866/files/77501768830.pdf
    • https://cdn.shopify.com/s/files/1/0431/0407/5933/files/mulitovir.pdf
    • https://cdn.shopify.com/s/files/1/0435/5280/0929/files/standing_outside_a_broken_phone_booth_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0439/0679/3627/files/34367371552.pdf
    • https://cdn.shopify.com/s/files/1/0437/7326/4030/files/mhxx_alchemy_style.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/sherlock_s_diseases_of_the_liver_and_biliary_system_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/39823068966.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_off0000511f.bin
f0d5e8ffe1eda30d197e0d181d1083140812f86815c7f95ca7d6c19ece2b1309		 pdf-font-stream PDF embedded font (sfnt) at offset 0x511F 5084 bytes
font_01_sfnt_off0000624f.bin
497049121c6387ae9a6fcb90a5bbaf822521ac8aa4715ed592bfbc58f6fc77a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x624F 10888 bytes

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