Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd73fe048b43055b…

MALICIOUS

PDF

46.6 KB Created: 2020-08-04 02:02:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f0d31ce906aa6ef152b0dd6edf02a95 SHA-1: 5a00e5b9d755062f11bce4c73d10be0b2ac8875c SHA-256: fd73fe048b43055b2308ea276e8532fe71c4daaf520d9482924195135620da1f
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a malicious redirector link disguised as a download button, intended to lure the user to a malicious site. The PDF also exhibits characteristics of a link farm, with numerous embedded links pointing to external resources. The primary malicious IOC is the redirector URL, which is designed to initiate a further download or redirect to malicious content.

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.
  • 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.cc/pify?keyword=coordinate+geometry+formula+sheet+pdf
    • http://files.sparksprotectionusa.com/uploads/1/3/0/9/130969663/wavetigaka_sawakuzudetijug_bogiroxekox.pdf
    • http://files.stalbansbg.co.uk/uploads/1/3/1/4/131411596/xororodivofuxum.pdf
    • http://files.rzecoseal.net/uploads/1/3/0/9/130969683/5398681.pdf
    • http://files.thatonepinkdog.studio/uploads/1/3/1/1/131163879/6178361.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/sunuju.pdf
    • https://cdn.shopify.com/s/files/1/0431/7216/7841/files/39729827487.pdf
    • https://cdn.shopify.com/s/files/1/0437/0923/5353/files/83146399842.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/kuwoxugoguzesajabunafalef.pdf
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/doweti.pdf
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/http__centurylink._net.pdf
    • https://cdn.shopify.com/s/files/1/0437/6962/6781/files/sazowexorezedidofututuzan.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/wamovirutalukuvaxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7020/files/xojuwasatorilix.pdf
    • https://cdn.shopify.com/s/files/1/0431/8248/9762/files/fogosifomef.pdf
    • https://cdn.shopify.com/s/files/1/0439/4903/1592/files/25938946868.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2465/files/monexa.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_off00006bef.bin
a0faca9851cedf811b0442fadcc8b474a097faccb046ae5e262252f56f7159c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEF 5464 bytes
font_01_sfnt_off00007e61.bin
5b00122cab67117d45ad3595eb915ba51d60b45695c64cf9fe6361885e910ebe
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E61 14656 bytes