Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f1aff03c0d06ed2…

MALICIOUS

PDF

47.7 KB Created: 2020-08-19 22:19:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d03a001c8edc3951268160bb27bc7ac SHA-1: 7d6651dc9b5fa2fa6fc7cbd0b73b0eaddb0f0b51 SHA-256: 3f1aff03c0d06ed268331bb543013356836590dcd55b16f4007eb33267eb9040
160 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at ttraff.ru. The document body also contains text that instructs the user to copy and paste content into a command-line context, indicating a social engineering lure to execute commands. The primary intent appears to be directing users to malicious infrastructure via the embedded links.

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=linux+cheat+sheet+pdf
    • http://files.dreamclimbthrive.com/uploads/1/3/1/3/131383664/a3ead.pdf
    • http://tusetil.nclandandhome.net/uploads/1/3/1/4/131406390/2115723.pdf
    • http://files.jackiesewell-artist.com/uploads/1/3/2/3/132303378/500b20651ad.pdf
    • http://files.purecbdnc.com/uploads/1/3/0/7/130738917/dojumi.pdf
    • https://cheatography.com
    • https://cdn.shopify.com/s/files/1/0429/1395/6006/files/84984037342.pdf
    • https://cdn.shopify.com/s/files/1/0432/6542/5570/files/vesebobama.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/kodi_beast_usa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0357/5454/files/wepoxutag.pdf
    • https://cdn.shopify.com/s/files/1/0435/1423/3000/files/73652642500.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/liguxunugetepawekokirun.pdf
    • https://cdn.shopify.com/s/files/1/0435/2439/1071/files/key_manager_plus_admin_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.pdf
    • https://cdn.shopify.com/s/files/1/0430/9306/5877/files/59702943999.pdf
    • https://cdn.shopify.com/s/files/1/0431/6197/6994/files/simple_mandala_colouring_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0440/4363/2805/files/cm_list_of_gujarat.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_off00006e02.bin
ba295a45b8c550111996c59d850868832a8752aa972f0f5b457d7e9f3b786459		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E02 5124 bytes
font_01_sfnt_off00007f71.bin
a3149a686abe5624e7029fbc48fbd5dc6cf6cff4a9bb00f223b5986cbded60ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F71 16320 bytes

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