Malicious PDF — malware analysis report

Static analysis result for SHA-256 517dd8c20245a719…

MALICIOUS

PDF

48.1 KB Created: 2020-08-01 14:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99751ea66e38a74307346b93a591c8f7 SHA-1: efddd1845cdfc5b3851edd74b06fee7f94af5aee SHA-256: 517dd8c20245a7196ddd9e07c4e1e678ea69fc1a05bf6a57db25dd6168d57b9b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=heroku+delete+app'. Additionally, a high severity heuristic indicates a 'Clipboard command execution lure', suggesting the document instructs the user to copy and paste content into a shell. This combination strongly implies the document is designed to trick users into executing malicious commands, likely to download and run a secondary payload. No scripts were extracted, but the presence of numerous embedded URLs, including the malicious redirector, supports this attack pattern.

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=heroku+delete+app
    • http://files.therapyandlearningservices.com/uploads/1/3/0/8/130814124/c2a23698c.pdf
    • http://files.attitudeofservice.net/uploads/1/3/0/7/130739039/pijobideluzosi_nusudivegibor.pdf
    • http://files.healthsenseamsterdam.nl/uploads/1/3/0/8/130813550/kumolokibagurip-mumexefogatitew-norakasefi-weviravivegifo.pdf
    • http://files.thomasjamesolearydirector.com/uploads/1/3/0/9/130969238/sexaxaru.pdf
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/69105353284.pdf
    • https://cdn.shopify.com/s/files/1/0431/8507/8423/files/53072767784.pdf
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/pr_cover_letter.pdf
    • https://cdn.shopify.com/s/files/1/0431/7108/6492/files/65231570526.pdf
    • https://cdn.shopify.com/s/files/1/0437/6834/8830/files/93673713921.pdf
    • https://cdn.shopify.com/s/files/1/0431/3245/3015/files/pogodejimeju.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6358/files/64950793774.pdf
    • https://cdn.shopify.com/s/files/1/0431/3219/0876/files/robajizonipatazubojarebo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/xolepomegisixus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/walezilufotalenuzodumis.pdf
    • https://cdn.shopify.com/s/files/1/0439/4736/0414/files/90541915969.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32829552166.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudusojixidotivage.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_off00007826.bin
b7c71aefdf11bdca24c69a9827ce5beeeea2ac660afa82ee94d7a35a258c2c07
pdf-font-stream PDF embedded font (sfnt) at offset 0x7826 4800 bytes
font_01_sfnt_off00008883.bin
8c3108c6e1dc772c7d00cb0da7e4d75cbd87199f557ffa97ab697c7aede7c612
pdf-font-stream PDF embedded font (sfnt) at offset 0x8883 13588 bytes