Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4445aec8897811e…

MALICIOUS

PDF

45.2 KB Created: 2020-09-07 05:17:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e49f8cddefdefa6ae8fb78e25e05a923 SHA-1: 13be71b2dfdb52d64816f685198ae5343e9c89c7 SHA-256: a4445aec8897811e2f6400f99c6694b8d05283221cff0937a5fa0057f21dfbcf
170 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.me', which is designed to lure users to a site likely hosting malware or phishing content. The document also includes a lure to copy/paste commands into a shell, suggesting an attempt to trick the user into executing malicious code. The presence of a large number of embedded links, many pointing to Shopify, indicates a link farm strategy to improve search engine visibility for malicious content.

Heuristics 5

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/wix?keyword=vcruntime140.+dll++windows+7+64+bit+microsoft
    • https://cdn.shopify.com/s/files/1/0434/8333/2772/files/87744906389.pdf
    • https://cdn.shopify.com/s/files/1/0434/7500/9696/files/wave_equation_derivation.pdf
    • https://cdn.shopify.com/s/files/1/0448/4556/4065/files/candlestick_chart_patterns_explained.pdf
    • https://cdn.shopify.com/s/files/1/0432/3983/3767/files/mofomabapugowaderuzajolo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6851/3686/files/d_d_perception_skill.pdf
    • https://cdn.shopify.com/s/files/1/0432/6306/6270/files/47004241834.pdf
    • https://cdn.shopify.com/s/files/1/0437/6628/4446/files/detuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5370/3590/files/que_son_los_anticoagulantes.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1183/files/pitezifuzipeterebawesimu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/64987968754.pdf
    • https://cdn.shopify.com/s/files/1/0433/1657/6424/files/gofipupadiduvuxim.pdf
    • https://static.usrfiles.com/ugd/db80c5_b998c40266e84828a2e5ffcc42f385d0.pdf
    • https://static.usrfiles.com/ugd/f63f29_d03ddd647aa346c9b5f76380a59e8d13.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_off00006dc1.bin
95afdfbfd956de392807ce2eb2a9793241c9231140f5dcda62b82e978302f1d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC1 5700 bytes
font_01_sfnt_off0000813c.bin
1f9791759655118f3b0d968fbb9bdc0da6ed5a7528a26352d9f45f09e788a889
pdf-font-stream PDF embedded font (sfnt) at offset 0x813C 10952 bytes