Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba0d27c34f3e0ac3…

MALICIOUS

PDF

39.1 KB Created: 2020-09-11 05:56:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24e101a48199b77d76ac67b75f11dbe2 SHA-1: 5f7522f449b527656e33cec14145efe253b53198 SHA-256: ba0d27c34f3e0ac342fadb6ae6b01808b6135800d958df2e5973e02a9d2e2830
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, disguised as a 'Cyberark privileged access security implementation guide'. This link, https://ttraff.club/wix?keyword=cyberark+privileged+access+security+implementation+guide, leads to known malicious infrastructure. The document also exhibits characteristics of a password-protected archive lure, suggesting it's designed to bypass gateway security by requiring the user to decrypt a subsequent payload. The presence of numerous external links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/wix?keyword=cyberark+privileged+access+security+implementation+guide
    • http://sokijolej.abatelakechapter.com/uploads/1/3/2/6/132695569/2b948aaf781876.pdf
    • http://gererim.kickskloset876.com/uploads/1/3/1/4/131438428/tesafazi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6757/files/bixatijo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rapuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4120/files/guia_holman_de_apologetica_cristiana_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/akkurat_std_font_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/8017/9107/files/beginners_reading_exercises.pdf
    • https://static.usrfiles.com/ugd/2a2e94_b6f7159de582483e9ce9ff95b35147bf.pdf
    • https://static.usrfiles.com/ugd/b3bc21_6cff08acb27f4924b3241e57b0d8e6ab.pdf
    • https://static.usrfiles.com/ugd/c1c462_13417b2477584714a29832a1c00350c7.pdf
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/describe_the_characteristics_of_information_technology.pdf
    • https://cdn.shopify.com/s/files/1/0429/1713/4499/files/risk_management_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1447/files/install_chromedriver_ubuntu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/76220353108.pdf
    • https://cdn.shopify.com/s/files/1/0445/3515/2804/files/gotham_font_css.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_off0000583f.bin
206ee9d158532dcb3a9018f12211718c7c1c5d4b9c9db314bca594e6bfd69d72
pdf-font-stream PDF embedded font (sfnt) at offset 0x583F 5664 bytes
font_01_sfnt_off00006b78.bin
0667bf3cdca2ddb870e29e73b846b08238078cc52829d18eee2984f7f266f36a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B78 10328 bytes