Malicious PDF — malware analysis report

Static analysis result for SHA-256 b47d5ce047242d2e…

MALICIOUS

PDF

55.9 KB Created: 2020-09-07 03:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a5b068985b25b51589ef1c275a83895 SHA-1: 7ac67437f8fd395c459e9ad6a8d15bbdbd684945 SHA-256: b47d5ce047242d2e6c3ffd9e04fadb9e313f2078ed64835a1b82eb8e6373eeb8
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to malicious infrastructure. The document body, though partially corrupted, contains text related to 'free adverse possession forms texas' and a URL that matches the redirector link. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external documents, suggesting a broader campaign to distribute malicious content or engage in SEO manipulation for malicious purposes. The primary malicious URL identified is https://ttraff.club/pify?keyword=free+adverse+possession+forms+texas.

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.club/pify?keyword=free+adverse+possession+forms+texas
    • https://static.usrfiles.com/ugd/857e61_f7eec5c804aa499189188e2c83794bac.pdf
    • https://static.usrfiles.com/ugd/3254bf_85b306e626df464182e1abcdb673fb14.pdf
    • https://static.usrfiles.com/ugd/cafc24_7312ed2219424a8393b973714888ad6f.pdf
    • https://static.usrfiles.com/ugd/d99ef3_6de54319227447ad861c67fae09f8502.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f19988edcee4f85a9c29f7c89c210ff.pdf
    • https://cdn.shopify.com/s/files/1/0429/0743/5167/files/nylatron_gsm_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/0645/0074/files/marketing_whitebook_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0294/files/swagger_editor_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/davijuvuvowin.pdf
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/29305022055.pdf
    • https://static.usrfiles.com/ugd/3fc21f_e84625fb0b3540db9edfee0723c727f3.pdf
    • https://static.usrfiles.com/ugd/affb4a_85cb70be1dea487880d3637fa0872236.pdf
    • https://static.usrfiles.com/ugd/934fc3_ef7e03c1a51642be84d3a9bf7a22e41f.pdf
    • https://cdn.shopify.com/s/files/1/0449/2584/5659/files/update_current_branch_with_master.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6229/files/95113897877.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2821/files/26895644159.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_off00009d31.bin
da02250cbcd4275bc01f4886ebed57f12d48b26f3fee9198d8ed998da9449a39
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D31 5236 bytes
font_01_sfnt_off0000aefb.bin
a145be8be585318c9faa1fa9b7fa2ae0c6edf644abbde8749169f6e382c47cd5
pdf-font-stream PDF embedded font (sfnt) at offset 0xAEFB 10440 bytes