Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd9d86911c1f022a…

MALICIOUS

PDF

45.4 KB Created: 2020-07-15 18:22:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4396a727b9727a53cb2f5ef7878e18a3 SHA-1: ddfe8457d1960baf5478aee4bebe5e4ee35dedf4 SHA-256: fd9d86911c1f022a78c8ffa846e457a8e6e87cded90e4ba0a79f3f3a3b852dc4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to a product listing, suggesting a lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates the primary URL leads to malicious infrastructure, and 'PDF_SEO_LINK_FARM' shows a large number of outbound links, typical of SEO poisoning or link farms used for traffic redirection and potential malware distribution.

Heuristics 3

  • 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.
  • 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.cc/wb?keyword=maquina%20tampografica%20manual%20en%20venta
    • http://files.afc7280.com/uploads/1/3/0/7/130775853/55498.pdf
    • http://files.trevorbennett.net/uploads/1/3/0/8/130873758/5497575.pdf
    • http://files.hopevineyardowosso.com/uploads/1/3/1/6/131637056/bamesafudot_zinevu_wejofotumixozux.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/80650261188.pdf
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/21173464713.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/juvanuponukozemat.pdf
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/21009281460.pdf
    • https://vupejesos.files.wordpress.com/2020/06/65229576760.pdf
    • https://pekakupesile.files.wordpress.com/2020/06/32747267622.pdf
    • https://ragusopibot.files.wordpress.com/2020/07/69173529403.pdf
    • https://derexomej.files.wordpress.com/2020/06/rorudimatonejasukexakamel.pdf
    • https://gepuguxiro.files.wordpress.com/2020/07/87662746278.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/bevemubizijiji.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/buvimid.pdf
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/jimebaradusos.pdf
    • https://cdn.shopify.com/s/files/1/0434/0593/4757/files/ketomemefuliwanolimuze.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/48420330121.pdf
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/rujiwomedekikakalowiw.pdf
    • https://cdn.shopify.com/s/files/1/0430/7392/9377/files/disune.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/
    • https://vupejesos.files.wordpress.com/2020/06/6522957676

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ddf.bin
28a89a66383a3ca0328c4f8d5a1edc8b660af1046faa9758a9eb292509baf68d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDF 5228 bytes
font_01_sfnt_off00007f9f.bin
0186113fdcafe05182326d3751b5e72aa152600fed8be39a940317c0d72f1890
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9F 11768 bytes